TWI436197B - Rack level power management - Google Patents

Description

Rack-level power management

This invention relates to the field of power management, and more particularly to a system for providing rack level power management for telecommunications racks utilizing centralized DC power.

Systems containing multiple modules, such as telecommunications modules, are often rack mounted, with multiple individual modules secured to a common rack, typically 19 inches wide. The various modules in the rack are typically powered by an on-board power supply from a common AC mains supply. As such, the on-board power supplies of the various units are used to convert the AC mains power to a local DC power suitable for the appropriate voltage for the electronics within the module.

Modules that use only a small amount of energy (such as when the module is off or in standby mode) still consume and waste power. In addition, multiple independent small power supplies are inefficient, with the power supply outputting full capacitance power in several modules and low capacitance in the power supply of other modules. The life of the power supply is at least partially dependent on utilization, where typically the highly utilized power supply begins to increase in temperature. As a result of the increase in temperature, the life of the power supply is shortened. As such, some of the modules in the rack may experience early failure due to stress from the power supply, but adjacent modules can still operate at low utilization.

Power over Ethernet (PoE) is a technology that can transmit power from a power supply device (PSE) to a powered device (PD) via a communication cable. The PoE standard has been published by the American Society of Electrical and Electronics Engineers (New York, NY) as IEEE Std. 802.3af-2003 (the entire contents of which are incorporated herein by reference). The PSE detects the power requested by the PD, and when the PSE is used to supply power to the PD, selectively selects the power demand of the detected PD, and then supplies power to the PD within a predetermined period of time after the detection is completed. PoE is an expandable technology in which additional PDs with associated power requirements can be increased by the user after initial installation. Additional power requirements may grow beyond the power supply originally supplied. The PoE can be supplied from a PSE associated with a switch/central device (referred to as a PoE-enabled switch on the market) or from a mid-span PSE module. Mid-span PSE modules can support one or more 埠, 1, 8, 12, 24, and 48 埠 units are commercially available. The PoE enabled switch and the midspan PSE module are collectively referred to herein as a PoE device.

Prior art systems required the addition of dedicated additional power supplies into modules to feed additional power required. Dedicated additional power supplies are typically initially underutilized and are only optimally utilized when the system's power requirements grow. This underutilized dedicated extra power supply is not available when one of the other modules in the system has reached the maximum utilization of its onboard power supply.

Chassis and blade-type telecommunications switch equipment have been designed to ensure maximum working time. The chassis includes a housing for receiving and interconnecting the backplane: blades; switch modules; management modules; power supplies; cooling fans; and other components. Chassis is expensive, but is preferably designed to provide redundancy and a high level of service. For example, multiple cooling fan blades may be supplied, one cooling fan blade providing redundancy in the cooling fan blades in operation. Similarly, the chassis typically provides some level of redundancy to the power and management modules. Unfortunately, the chassis is expensive and restricts the purchaser to use devices that are compatible with the chassis backplane. As explained earlier, rack-level equipment allows the use of rack-mounted modules and standardizes cable interconnections. As such, the use of rack-level devices provides some flexibility and avoids the initial high cost associated with the chassis. Unfortunately, the use of rack-level devices does not provide the degree of redundancy associated with chassis devices.

A power management system for a regional network hub is disclosed in U.S. Patent No. 5,652,893 issued to Ben-Mei. The power supply is also referred to as a power supply, and the power supply is provided with one or more components that provide the highest available power of the system. The manageable module is connected to the switching hub, and each manageable module has a memory for providing information according to the power requirement of the module. The controller module including the microprocessor calculates the power requirements of the system, and the controller module enables or can manage the module according to the power utilization rate. Unfortunately, the system only allows two states, namely the enabling state and the de-energizing state, for each module. As such, the module cannot be powered in a low power state or a medium power state. The Ben-Meir embodiment is an example of a chassis device.

Therefore, what is needed and not provided by the prior art is a system that provides rack-level power management, wherein the power system is distributed to a plurality of modules mounted on the rack, and each module is responsive to available power, and to the machine A variable power distribution is received by the power requirements and priorities of the modules on the rack.

As such, the primary object of the present invention is to overcome the shortcomings of the prior art. The present invention is provided by a system having at least one power source, a management module, and a plurality of power managed modules in communication with the management module. Each of the power managed modules is configured to draw at least a plurality of power from the at least one power source. Each power managed module includes a power manager operable to control power drawn by the power managed module. The management module allocates a power budget to each of the power managed modules, and the power management module of the power management module is operable to control the operation of the module so that the power drawn is within the allocated budget.

Power managed modules may include PoE devices, switches, hubs, concentrators, computing devices, or other telecommunications modules that can operate at a variety of different power levels. The power managed module can be powered by an onboard power supply or preferably an onboard power supply. Preferably, the central power source includes at least one power supply, more preferably a plurality of power supplies, such that the operating power is supplied to the power management modules of the rack in an optimized manner. The management module distributes power to each of the power managed modules that draw power.

The power budget is dynamically allocated based on predetermined criteria. In the case where the central power source has one or more power supply failures, in one embodiment, the management module instructs each of the power managed modules to change their power consumption to a pre-allocated amount. In another embodiment, when one or more power supply failures, the management module instructs each of the power managed modules to reduce their power consumption by a pre-allocated amount.

In one embodiment, the power manager of the at least one power managed module can sense a change in voltage level from the at least one power source and, in response thereto, reduce its power consumption. This response allows the power manager to automatically manage power when it is in communication with the management module.

In one embodiment, the central power source includes a plurality of power supplies arranged in an N+M redundant arrangement. The management module retains the power of the M redundant power supplies, so the budgeted power can be provided in the absence of one or more failed power supplies. As such, the present invention provides a chassis function for a decentralized rack-level device.

In one embodiment, the system provides a plurality of bus bars, wherein the first bus bar is used for communication of the ongoing power demand and the power budget, and the second bus bar is used for emergency communication, such as the center power source having at least one power source Communication in the event of a supplier failure. A variety of possible situations are generated, preferably transmitted to the module in advance through the first bus. In the event of a power event, such as one or more power supply failures, one of the conditions is preferably implemented by a second bus broadcast implementation message. Still more preferably, at least one of the first bus bar and the second bus bar is arranged in a closed loop configuration, thus allowing communication interruptions to be identified via the monitoring loopback path.

The present invention provides a rack-level power management system, the system comprising: at least one power source; a management module; and a plurality of power-managed modules that communicate with the management module and that draw power from the at least one power source Each of the plurality of power-managed modules each includes a power manager and an operating circuit, the operating circuit being operative to operate at a plurality of power levels in response to the power manager, the management module operable to allocate a power budget Up to each of the plurality of power-managed modules, and communicating the allocated power budget to the power manager, each power manager operable to control an operation circuit of the power-managed module俾It can operate at the power level within the allocated power budget.

In one embodiment, the management module is coupled to receive an indication of available power from the at least one power source, and to allocate the power budget in response to the received indication. In another embodiment, the management module is operable to allocate a power budget based on the priority order, and each of the power managed modules is assigned a priority order. In still another embodiment, the plurality of power managed modules have a minimum required power and an additional power level exceeding the minimum required power, and the management module is operable to have a minimum requirement for each of the plurality of power managed modules The power distribution power budget allocates an additional power level of the power budget to at least one of the plurality of power managed modules only when additional power is available. In still another embodiment, the power budget for the additional power level is allocated based on a priority order.

In one embodiment, the plurality of power managers each include a power meter, and respective power managers of the plurality of power managers receive an indication of the power drawn from the power meter. In another embodiment, at least one of the plurality of power-managed modules is selected from the group consisting of an enabling switch, a switch, a hub, a concentrator, an computing device, and a power supply device powered by the Ethernet. And a group of telecommunications modules.

In one embodiment, the operational circuitry of at least one of the plurality of power managed modules includes a jumper panel operable for the power supply to be prepared. In another embodiment, at least one of the power and management modules is contained within a single equipment rack.

In one embodiment, the management module is further operative to input all available power. The allocated power budget is allocated in response to the all available power input. In still another embodiment, the system further includes at least one module that does not include a power manager operable to reduce a power requirement of the at least one module from all available power input.

In one embodiment, the management module is further operable to transmit at least one power budget condition, the management module is further operable to monitor a condition of the at least one power source, and to broadcast the command to the plurality of power management when the monitored condition changes The modules, the plurality of power managed modules are operable to also follow the at least one power budget condition in response to the broadcasted command. In still another embodiment, the system further includes a first bus bar and a second bus bar, wherein the management module is operable to transmit at least one power budget condition through the first bus bar; and broadcast through the second bus bar The order. In still another embodiment, at least one of the first bus bar and the second bus bar is configured as a closed loop configuration.

In one embodiment, the system further includes at least one communication bus that is configured in a closed loop configuration, the management module operable to communicate the allocated power budget through the at least one communication bus. In another embodiment, the management module is further operable to monitor the return of the at least one communication bus, and when the allocated power budget of the communication is not received through the monitored loopback, the communication is transmitted through the loopback. The allocated power budget.

In one embodiment, a power manager of at least one of the plurality of power managed modules is further operable to sense the reduced voltage and to control the power manager in response to the sensed voltage decrease The associated operating circuitry reduces the power drawn.

In addition, the present invention provides a rack-level power management method, including: providing at least one power source; providing a plurality of power-managed module connections to draw power from the at least one power source; and allocating a power budget to the plurality of power supplies provided Each module of the managed module; and transmitting the allocated power budget to the plurality of power managed modules, each power managed module controlling the captured power to the transmitted power budget Within.

In one embodiment, the method further includes receiving an available power indication from the at least one power source, the allocating being performed in response to the received indication. In another embodiment, the allocation is based at least in part on a priority order.

In one embodiment, the plurality of power-managed modules provided have a minimum required power and an additional power level exceeding the minimum required power, and the allocation phase includes: modules of the plurality of power-managed modules The group allocates the minimum required power and, when additional power is available, allocates a power budget to the additional power levels of at least one of the plurality of power managed modules. In yet another embodiment, allocating power budgets to additional power levels is based on a prioritized rank reference.

In one embodiment, the method further includes receiving, by each of the plurality of powered-managed modules, a power indication retrieved by the power-managed module. In another embodiment, at least one of the plurality of power-managed modules provided is selected from the group consisting of an Ethernet-enabled power converter, a switch, a hub, a concentrator, an computing device, At least one of a power supply device and a telecommunications module.

In one embodiment, at least one of the plurality of power managed modules provided includes a power supply operable to supply a prepared jumper panel.

In one embodiment, the method further includes: inputting all available power, and distributing the power budget is performed in response to all of the available power input. In still another embodiment, the method includes providing at least one module that does not receive the transmitted power budget of the transmission, and from all of the inputs Power is used to deduct the power requirements of the at least one module.

In one embodiment, the method further comprises: monitoring a status of the provided at least one power source; transmitting at least one power budget condition to the plurality of power managed modules provided; and, when the monitored condition changes In the case of a broadcast command to most of the power managed modules, most of the power managed modules follow at least one of the transmitted power budgets in response to the broadcasted commands. In another embodiment, the method further comprises: sensing, by the at least one of the plurality of power-managed modules provided, the reduced voltage; and reducing the provided voltage reduction in response to the sensed voltage reduction The power managed module draws power.

In one embodiment, the method further includes: monitoring a loopback of the power budget allocated by the transmission; and transmitting the unsensed power source through the loopback if the transmitted power budget is not monitored by the monitoring budget. In still another embodiment, the method further includes: monitoring a status of the provided at least one power source; transmitting at least one power budget condition to the plurality of power-managed modules provided by the first bus; and When the monitored condition changes, a command is broadcast to the majority of the power-managed modules through a second bus bar different from the first bus bar, and most of the power-managed modules respond to the broadcasted Commands follow at least one of the power budgets transmitted.

In addition, the present invention provides a rack-level power management system, the system comprising: at least one power source including a plurality of power supplies; a management module; and communication with and connected to the management module to draw power from the at least one power source Multiple power managed modules, multiple power managed modules Each includes a power manager and an operational circuit responsive to the power manager for operating at a plurality of power draw levels, the management module operable to allocate a power budget to the plurality of power managed modules Each of the modules communicates the allocated power budget to the power manager, and is further operable to communicate a plurality of power conditions and associated power budgets to the power managed modules, the respective power managers Operates to control the operational circuitry of the power managed module to operate at a power capture level within the allocated power budget, and to actuate the power supply in response to communication from the management module The operational circuitry of the managed module is controlled to operate at a power draw level within a power budget associated with the actuated condition.

Other features and advantages of the present invention will become apparent from the accompanying drawings and description.

For a better understanding of the invention and the invention, it will be understood that the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION The detailed description is to be considered as illustrative of the preferred embodiments of the invention. . In this regard, the details of the details of the present invention are not to be construed as a

Table I of the description is representative of a tabular embodiment of the possible scenarios resulting from the results of the method of FIG. 8 in accordance with the principles of the present invention.

This embodiment allows a rack level power management system to have at least one power source, a management module, and a plurality of power managed modules in communication with the management module. Each of the power managed modules is configured to draw at least a plurality of power from the at least one power source. Each power managed module includes a power manager operable to control power drawn by the power managed module. The management module allocates a power budget to each of the power managed modules, and the power management module of the power management module is operable to control the operation of the module so that the power drawn is within the allocated budget.

Power managed modules may include PoE devices, switches, hubs, concentrators, computing devices, or other telecommunications modules that can operate at a variety of different power levels. The power managed module can be powered by an onboard power supply or preferably an onboard power supply. Preferably, the central power source includes at least one power supply, more preferably a plurality of power supplies, such that the operating power is supplied to the power management modules of the rack in an optimized manner. The management module distributes power to each of the power managed modules that draw power.

The power budget is dynamically allocated based on predetermined criteria. In the case where the central power source has one or more power supply failures, in one embodiment, the management module instructs each of the power managed modules to change their power consumption to a pre-allocated amount. In another embodiment, when one or more power supply failures, the management module instructs each of the power managed modules to reduce their power consumption by a pre-allocated amount.

In one embodiment, the power manager of the at least one power managed module can sense a change in voltage level from the at least one power source and, in response thereto, reduce its power consumption. This response allows the power manager to automatically manage power when it is in communication with the management module.

In one embodiment, the central power source includes a plurality of power supplies arranged in an N+M redundant arrangement. The management module retains the power of the M redundant power supplies, so the budgeted power can be provided in the absence of one or more failed power supplies. As such, the present invention provides a chassis function for a decentralized rack-level device.

Before explaining the details of at least one embodiment of the present invention, it is understood that the present invention is not limited to the details of the components and the configuration of the elements illustrated in the following description. The invention is applicable to other embodiments or can be carried out or carried out in various ways. In addition, it is to be understood that the terms or terms used herein are for illustrative purposes only and are not considered as limiting.

1 shows a high level view of a telecommunications device mounted to rack 10 in accordance with the teachings of the prior art. The rack 10 includes a plurality of switches 20, a plurality of patch panels 30, a data machine 40, a power strip 50, and a connection 60 to an AC mains power source. The plurality of switches and modems 40 of the plurality of switches 20 include separate onboard power supplies (not shown) such that they have connections to the power strips 50. The patch panel 30 is not powered, and the patch panel 30 serves as an interconnection point that is coupled to each of the switches 20 and user nodes (not shown). In a local area network (LAN), the patch panel uses cables to interconnect the switches/servers of each node to the regional network as a static power strip. Jumper panels typically use a jumper cable, referred to as a jumper cable or jumper cable, to form an individual interconnection between the switch and the jumper panel that represents the user node. The jumper cable is not shown for clarity.

Modules such as one of the switches 20 and the data unit 40 utilize only a small amount of electrical energy, such as when the module is off or the module is in the standby mode, which still consumes and wastes power. In addition, multiple independent small power supplies are inefficient, as represented by the power supplies included in each of the switches 20 and the data units 40, and the power supplies of the plurality of modules output the power of the complete capacitors, such as other modules. The power supply has a low capacitance. The life of the power supply is determined, at least in part, by utilization, where typically the highly utilized power supply begins to experience high temperatures. This increase in temperature results in a shortened life of the power supply. As such, some of the modules on the rack may experience early failure due to stress from the power supply, while nearby low-utilization modules are still operational.

2A shows a high-level view of a first embodiment of a rack-mounted telecommunications device including a rack 10 for securing a plurality of power supplies 100, a management module 110, a power supply unit 120, and a power supply unit in accordance with the principles of the present invention. A ready jumper panel 130, a power managed module 140, a plurality of switches 150, a patch panel 30, a power strip 50, and a connection 60 to the AC mains power supply. The plurality of power supplies 100 are shown as being housed in a single power rack 160 of the rack 10 as a single power source, and the power rack 160 further includes a management module 110. The power managed module 140 can include a switch, hub device, data machine, mid-span PSE, computing device, or gateway without exceeding the scope of the present invention.

In a specific embodiment, the power supply frame 160 is not more than 1 U in height, and the power supply frame 160 is designed to have a back plate, so that the plurality of power supply devices 100 can be individually hot-swapped. The backplane is further designed such that the power supply 100 is not inserted into a slot that is desired to receive the management module 110; and the management module 110 does not plug into a slot that is intended to receive the power supply 100.

The plurality of power supplies 100 each have a connection to the power strip 50, but in contrast to the prior art configuration of FIG. 1, the other modules do not have a connection to the power strip 50. The power supply rack 160 has a power supply device 120, a power management module 140, and a switch 150, and is configured to connect and supply power from the plurality of power supplies 100 to the data communication with the supply and management module 110. The power supply unit 120, the power managed module 140, and the switch 150 are shown as not including an onboard AC/DC power supply, as is lacking the connection to the power strip 50 indication, but this is by no means limiting. Any one or more of the power supply devices 120, the power managed module 140, and the switch 150 may include an onboard AC/DC power supply that supplies additional or redundant power without exceeding the scope of the present invention .

In operation, the power supply 100 is coupled in a power sharing configuration, and the management module 110 is configured to receive power output indications from the respective power supplies 100. In a specific embodiment, the power supply 100 is configured as a single power supply of N+M redundant arrangement, and the N operation power supply 100 has an M power supply 100 as a redundant power supply. In one embodiment, each power supply 100 supplies an indication of the power output; in another embodiment, a separate current indicator and preferably a voltmeter may be provided. The management module 110 is in communication with various modules that draw power from the power supply 100, such as the power supply device 120, the power managed module 140, and the switch 150, and obtain power requirements for each module. Instructions. The power source is assigned to each module according to predetermined criteria, and the modules operate in accordance with the allocation to draw power. In one embodiment, the power supply is equally distributed to all modules; in another embodiment, the power is distributed according to a priority order; in another embodiment, the power is distributed to all modules at the lowest operating level, and the additional power is It is assigned according to the priority order.

2B shows a high-level view of a second embodiment of a rack-mounted telecommunications device including a rack 10 that securely houses a first power shelf 210 that includes a plurality of power supplies 100 and management modules in accordance with the principles of the present invention. 110; the second power shelf 220 includes a plurality of power supplies 100 and a management module 110; a power supply device 120; a power supply via a prepared jumper panel 130; a power management module 140; an exchanger 150; The power supply's switch 200; the jumper panel 30; the power strip 50; and the connection 60 to the AC mains power source. The power managed module 140 can include a switch, hub device, data machine, mid-span PSE, computing device, or gateway without exceeding the scope of the present invention.

In a specific embodiment, the first power supply frame 210 and the second power supply frame 220 have an individual height of no more than 1 U, and are designed to have a backplane, and the plurality of power supply devices 100 are individually hot swappable. As such, the first power shelf 210 and the second power shelf 220 can each function as a power source including the plurality of power supplies 100. In addition, the first power frame 210 and the second power frame 220 are configured to be a single power source. The backplane is further designed such that the power supply 100 does not plug into a slot that is desired to receive the management module 110, and the management module 110 does not plug into a slot that is intended to receive the power supply 100.

The plurality of power supplies 100 each have a connection to the power strip 50, but contrary to the prior art configuration of FIG. 1, the other modules (except the switch 200 with the onboard power supply) do not have a connection to the power strip 50. The first power shelf 210 and the second power shelf 220 have a connection with the power supply device 120, the power management module 140, the switch 150, and the switch 200 of the onboard power supply, and the connection can be supplied from multiple power supplies. The power of the device 100 is communicated with the data of the management module 110. The power supply device 120, the power managed module 140, and the switch 150 are shown as not including an onboard power supply, for example, lacking an indication to the power strip 50, but are by no means limiting. Any one or more of the power supply devices 120, the power managed module 140, and the switch 150 may include an onboard AC/DC power supply that supplies additional or redundant power without exceeding the scope of the present invention .

In operation, the power supply 100 is coupled in a power sharing configuration, and the management module 110 is configured to receive power output indications from the respective power supplies 100. In a specific embodiment, the power supply 100 is configured as a single power supply of N+M redundant arrangement, and the N operation power supply 100 has an M power supply 100 as a redundant power supply. The first power shelf 210 serves as a first power source, and the second power shelf 220 serves as a second power source. In another embodiment, the first power shelf 210 and the second power shelf 220 are configured as a single unified power source. In one embodiment, each power supply 100 provides an indication of power output; in another embodiment, a separate current indicator is provided and is preferably a voltmeter. The management module 110 of the first power supply rack 210 and the management module 110 of the second power supply rack 220 are used as redundant management modules, and the first one of the management modules 110 functions as an active module, and the management module 110 The second is used as a redundant module.

The function management module 110 communicates with each module that draws power from the power supply 100, such as the power supply device 120, the power management module 140, the switch 150, and the switch 200 of the onboard power supply. And obtain an indication of the power requirements from each module. The power supply is assigned to each module according to pre-defined criteria, and the module is operable to draw power based on the distribution. In one embodiment, the power system is equally distributed to all modules; in another embodiment, the power is distributed according to a priority order; and in another embodiment, the power is distributed to all modules at a minimum operating level, and additional power It is assigned according to the priority order. The redundancy management module 110 monitors the indication received by the role management module 110, and thus acts as an operable redundancy module in the event that the role management module 110 fails.

3 shows a high level block diagram of an embodiment of a power managed module 140 in accordance with the principles of the present invention. The power management module 140 includes a hot swap controller 305, a DC/DC converter 300, a power meter 310, a power manager 320, and an operation circuit 330. The hot swap controller is configured to allow hot swapping of the power managed module 140. The DC/DC converter 300 is configured to receive DC operating power from the plurality of power supplies 100 of FIGS. 2A, 2B through the hot swap controller 305. The output of the DC/DC converter 300 is passed through a power meter 310 to an operational circuit 330. The power manager 320 is configured to communicate with the management module 110, receive power indications from the power meter 310 that are captured by the operating circuit 330, and communicate with the operating circuit 330. In one embodiment, the output of the DC/DC converter 300 is an intermediate operating voltage, typically about 5-12 volts, and the operating circuit 330 includes at least one point of a load converter (not shown) that can operate as The circuit 330 is required to operate to convert the intermediate operating voltage to an appropriate voltage. In a specific embodiment, at least one point of the load converter is in communication with the CPU through the I ² C bus and is required to supply power to the required voltage.

In operation, the power manager 320 receives an indication from the management module 110 indicating the power allocated to the module 140 under power management. The power manager 320 monitors the power drawn by the operating circuit 330 through the power meter 310 in response to the received power distribution. In one embodiment, power meter 310 further implements a power limiter that is operable to limit the power drawn by operating circuit 330 via a power limiting function that controls power meter 310. When the power drawn by the operating circuit 330 exceeds the received power distribution, the power manager 320 is operable to communicate with the operating circuit 330 to reduce the drawn power to a budget. In one embodiment, the operational circuit 330 includes an arithmetic device that draws power down by decreasing the speed of the operation, preferably by reducing the voltage supplied by the load converter at that point. In another embodiment, the operating circuit 330 includes a plurality of PoE PSEs, each of which supplies power to the PD via the output cable via the communication cable, and the power is removed from the at least one PD to thereby reduce power consumption. In yet another embodiment, the operating circuit 330 includes a power supply device that can be powered by a power supply via a prepared jumper panel to a plurality of PDs. Further, the name of the patent application filed concurrently is "Providing an Ethernet via a patch panel" The system of power supply is described herein in its entirety by reference. Conversely, when the power drawn by the operating circuit 330 is lower than the received power distribution, the power manager 320 can be operative to communicate with the operating circuit 330 to indicate the additional power available. In one embodiment, the operational circuit 330 includes an arithmetic device that increases the power drawn to increase the power drawn, thereby improving performance. In another embodiment, the operational circuit 330 includes at least one PoE PSE that is enabled for at least one PSE to which the PD is coupled, thereby increasing power capture.

Power manager 320 preferably takes into account any losses associated with hot plug controller 305, DC/DC converter 300, and power meter 310. Preferably, the power drawn by the power manager 320 is tapped after the power meter 310 (not shown), and is included within the power drawn by the power meter 310. In another embodiment, the power drawn by the power manager 320 is a predetermined amount that is subtracted from the received power distribution. In yet another embodiment, the received power is distributed as a net power loss associated with the hot swap controller 305, the DC/DC converter 300, the power meter 310, and the power drawn by the power manager 320.

4A shows a high level block diagram of an embodiment of a system 400 including a management module and a plurality of power supplies in communication with at least one power managed module in accordance with the principles of the present invention. System 400 includes a plurality of power sources 100 each having a status indicator signal 405, and a current indicator 410; a management module 110; a PoE device 420; an onboard power supply switch 200; and a PoE enabled switch 450 . The PoE device 420 includes a hot plug controller 305, a power meter 310, a power manager 320, and an operating circuit 460 including a plurality of PoE management circuits 470. The onboard power supply switch 200 includes a hot swap controller 305, a DC/DC converter 300, an AC/DC converter 440, a connection 60 to an AC mains power supply, a power meter 310, a power manager 320, and operation. Circuit 330. The PoE-enabled switch 450 includes first and second hot plug controllers 305, DC/DC converters 300, first and second power meters 310, first and second power managers 320, operating circuits 330, and An operational circuit 460 comprising a plurality of PoE management circuits 470. In a specific embodiment, each PoE management circuit 470 is coupled to a plurality of ports, and a portion or all of the ports are coupled to the PD via a twisted pair communication cable. Operating circuit 460 is shown as a separate unit from power manager 320, but is not meant to be limiting. Power manager 320 can be incorporated into one or more PoE management circuits 470 without exceeding the scope of the present invention. Power meter 310 is shown separate from power manager 320, but is not meant to be limiting, and power meter 310 can be integrated with power manager 320 without exceeding the scope of the present invention.

The plurality of power supplies 100 are commonly connected in a power sharing configuration, such as descent or active current sharing, here exemplified by a common sharing bus; PoE device 420, on-board power supply switch 200, and PoE The switchers 450 are each coupled to the common share bus through an individual hot swap controller 305. In the illustrated embodiment, most of the power drawn is intended for PoE applications, such that the DC/DC converter 300 is isolated from the non-PoE operating circuit 330 and the chassis. Inside the on-board power supply switch 200 and the PoE-enabled switch 450, the DC/DC converter 300 receives power from the common shared bus through the individual hot-swap controller 305, and according to IEEE 802.3af The insulation is required to insulate and convert power to an overvoltage for use by the individual operating circuit 330. Power meter 310 and power manager 320 are associated with individual operating circuits 330, 460 and individual power meter 310, respectively. The individual power managers 320 are configured to receive inputs from individual power meters 310, are configured to communicate with the management module 110, and are configured to communicate with the individual operating circuits 330, 460. The individual power meters 310 are configured to provide an indication of the power drawn by the individual operating circuits 330, 460 to the individual power managers 320.

The onboard power supply switch 200 has an AC/DC converter 440 that receives AC main power from a connection 60 to an AC mains power source. In a particular embodiment, the connection 60 to the AC mains power source includes a connection via the power strip 50 of FIGS. 2A and 2B.

Individual status indicators 405 are each coupled to an input of management module 110. In a particular embodiment, each status indicator 405 includes information regarding at least one of a power good signal for the individual power supply 100, a temperature of the individual power supply 100, and a stress level of the individual power supply 100. The status indicator 405 is exemplified by separate data links with the respective power supplies 100, but is not meant to be limiting. In one embodiment, the data link is replaced with an external sensor; in another embodiment, the data link is part of a data bus configuration. The various current indicators 410 from the individual power supplies 100 are shown as separate data links to the power supply 100, but are by no means limiting. In one embodiment, the data link is replaced with an external sensor; in another embodiment, the data link is part of the data bus configuration.

The data link exists between the management module 110 and each of the power managers 320. In one embodiment, the data link between the management module 110 and each of the power managers 320 is a high-speed data bus such as the Electronic Industry Alliance of Arlington (Virginia) in Arlington, Virginia. Defined EIA 485. EIA 485 is also referred to as RS 485. In another embodiment, the data link between the management module 110 and each power manager 320 includes a pair of data buss: the first data bus is at a high speed, such as 1 Mbps, carrying an ongoing message, which is detailed later; And, the second data bus is a lower speed bus, such as 100 Kbps, containing emergency messages and addressing information, as detailed later. The second data bus is referred to herein as an emergency bus. In a specific embodiment, the data link between the management module 110 and each of the power managers 320 is achieved through a bidirectional single twisted pair bus in a ring configuration. In such an embodiment, the management module 110 observes the bus bar and determines that the message sent by the management module 110 has passed through the entire bus bar. When a communication failure is sensed, the message is preferably re-introduced in the reverse direction, thereby improving communication reliability.

In operation, a plurality of power supplies 100 are connected to a power sharing configuration operation to supply power to each PoE device 420; an onboard power supply switch 200; and a PoE enabled switch 450. The status indicator 405 outputs status information about the individual power supply 100, and the status information is received by the management module 110. The current indicator 410 outputs information about the output current of the individual power supply 100 and is received by the management module 110. The management module 110 is further operable to communicate with the PoE device 420, the onboard power supply switch 200, and the PoE-enabled switch 450 of the power manager 320, thereby communicating priority information and assigning individual power supplies. budget. In one embodiment, the management module 110 further receives information about the priority order of each of the ports to which the PD request power can be linked. Preferably, the management module 110 has an overall map of all connected PoE devices, modules, and their priorities, allowing the power system to be allocated according to the priority order regardless of the PoE management circuit 470 to which the port is connected. The PoE management circuit 470 operates under the control of an individual power manager 320 to query, selectively classify, and subsequently feed the connected PDs.

The management module 110 operates in a manner described later to maintain a power schedule indicating the possible states of the various status indicators 405. As such, in the event of failure of one or more of the power supplies 100, in response to changes in the individual status indicators 405, the management module 110 can be operative to query for appropriate actions in the pre-stored power condition table and broadcast the situation. The numbers are given to the respective power managers 320. Using the lookup table and the pre-transmission situation, the management module 110 and the power manager 320 have sufficient time to respond, thereby reducing power consumption, thereby limiting the amount of time that an overload condition may exist.

Each power manager 320 is preferably operative to receive a power budget from the management module 110 and to control the operation of the individual operating circuits 330, 460 based on the received power budget. As such, the power manager 320 acts as a local power budget monitor. In another embodiment, the user sets a priority with a host computer or controller that communicates with the management module 110. In another embodiment, the priority order can be set by the user for each PoE that the PoE management circuit 470 feeds. The management module 110 communicates the received priority order setting value to the PoE management circuit 470 through the individual power manager 320. In another embodiment (not shown), the name of the patent application filed in conjunction with the entire disclosure of the entire disclosure of the entire disclosure of which is incorporated herein by reference. At least one operating circuit 460 is powered by the power PoE to the PD, and the PoE management circuit 470 receives the associated information from the power source via the prepared jumper panel. In such an embodiment, the PoE management circuit 470 that receives the priority information from the power supply via the prepared jumper panel shares the priority order information with the management module 110 through the individual power manager 320.

The onboard power supply switch 200 receives power from the AC mains power supply through a connection 60 to the AC mains power source. When the power drawn by the operating circuit 330 exceeds the power supplied by the AC/DC converter 440, the additional power may be drawn from the plurality of power supplies 100. The total power drawn is monitored by the power manager 320 of the switch 200 of the onboard power supply, allowing the operating circuit 330 to increase the power drawn from the AC/DC when additional power has been allocated by the management module 110. The power that converter 440 can utilize. Further, in the case where the AC main power failure occurs, and in the case where the battery or other uninterruptible power supply is connected as the power supply 100, the electric power can be drawn by the operation circuit 330 in the absence of the AC main power supply. Preferably, in such an embodiment, power manager 320 acts to reduce power consumption of operating circuit 330.

4B is a high-level block diagram of an embodiment of the data link of FIG. 4A having a first data bus and a second data bus, in accordance with the principles of the present invention, the data link including: a management module 110; first and second PoE device 420; power management module 140; first bus bar 520; and second bus bar 530. The management module 110 includes a control circuit 500, a first transceiver 510, a second transceiver 512, a third transceiver 514, and a fourth transceiver 516. The first and second PoE devices 420 each include a first transceiver 518, a second transceiver 519, and a power manager 320. The power managed module 140 includes a first transceiver 518, a second transceiver 519, and a power manager 320.

The control circuit 500 is coupled to the input terminals of the respective transmitters of the first, second, third, and fourth transceivers 510, 512, 514, and 516 of the management module 110; the control circuit 500 is also coupled to the management module 110. The outputs of the individual receivers of the first, second, third, and fourth transceivers 510, 512, 514, 516. The output of the transmitter of the first transceiver 510 of the management module 110 is coupled to the receiver of the first transceiver 510 of the management module 110, and is coupled to the first PoE device 420 via a portion of the first bus 520. The output of the transmitter of the first transceiver 518 and the input of the receiver of the first transceiver 518 of the first PoE device 420. The output of the transmitter of the second transceiver 512 of the management module 110 is coupled to the receiver of the second transceiver 512 of the management module 110, and is coupled to the first PoE device 420 via a portion of the second bus 530. The output of the transmitter of the second transceiver 519 and the input of the receiver of the second transceiver 519 of the first PoE device 420.

The power manager 320 of the first PoE device 420 is coupled to the receiver output of the first transceiver 518 of the first PoE device 420, and is coupled to the transmitter output of the first transceiver 518 of the first PoE device 420. The output to the receiver of the second transceiver 519 of the first PoE device 420 is coupled to the transmitter input of the second transceiver 519 of the first PoE device 420. The transmitter output of the first transceiver 518 of the first PoE device 420 is coupled to the transmitter output of the first transceiver 518 of the second PoE device 420 and the second PoE device 420 by a portion of the first bus 520 Both of the receiver inputs of the first transceiver 518. The transmitter output of the second transceiver 519 of the first PoE device 420 is coupled to the transmitter output of the second transceiver 519 of the second PoE device 420 and the second PoE device 420 by a portion of the second bus bar 530. Both of the receiver inputs of the second transceiver 519.

The power manager 320 of the second PoE device 420 is coupled to the receiver output of the first transceiver 518 of the second PoE device 420, and is coupled to the transmitter output of the first transceiver 518 of the second PoE device 420. The output to the receiver of the second transceiver 519 of the second PoE device 420 is coupled to the transmitter input of the second transceiver 519 of the second PoE device 420. The transmitter output of the first transceiver 518 of the second PoE device 420 is coupled to the transmitter output of the first transceiver 518 of the power managed module 140 by a portion of the first bus 520 and is managed by the power supply. Both of the receiver inputs of the first transceiver 518 of the module 140. The transmitter output of the second transceiver 519 of the second PoE device 420 is coupled to the transmitter output of the second transceiver 519 of the power managed module 140 by a portion of the second bus 530 and is managed by the power supply. Both of the receiver inputs of the second transceiver 519 of the module 140.

The power manager 320 of the power management module 140 is coupled to the receiver output of the first transceiver 518 of the power managed module 140 and coupled to the first transceiver 518 of the power managed module 140. The transmitter input is coupled to the output of the receiver of the second transceiver 519 of the power managed module 140 and to the transmitter input of the second transceiver 519 of the power managed module 140. The transmitter output of the first transceiver 518 of the power management module 140 is coupled to the transmitter output of the third transceiver 514 of the management module 110 and the management module 110 by a portion of the first bus 520. Both of the receiver inputs of the third transceiver 514. The transmitter output of the second transceiver 519 of the power management module 140 is connected to the transmitter output of the fourth transceiver 516 of the management module 110 and the management module 110 by using a portion of the second bus 530. Both of the receiver inputs of the fourth transceiver 516. In a specific embodiment, each of the transmit and receive 510, 512, 514, 516, 518, 519 operates according to EIA-485. In the preferred embodiment, the first and second transceivers 510, 512 are respectively used as the first convergence. The main control circuit of the row 520 and the second bus bar 530 operates.

In operation, the first bus bar 520 and the second bus bar 530 are connected in a daisy chain or ring configuration, and the first and second PoE devices 420 and the power management module 140 have internal direct The first bus bar 520 and the second bus bar 530 are connected back to the management module 110. As such, the first bus bar 520 and the second bus bar 530 are operable regardless of the individual operations of the first and second PoE devices 420 and the power managed module 140. The control circuit 500 is operable to communicate the ongoing message to the first and second PoE devices 420 and the power managed module 140 through the first transceiver 510 and the first bus 520, and further receive the third transceiver. 514 and the transmitted message received by the loop path of the first bus 520. The control circuit 500 is further operable to communicate emergency messages to the respective first and second PoE devices 420 and the power managed module 140 through the second transceiver 512 and the second bus 530 of the management module 110; and further The fourth transceiver 516 of the management module 110 and the loop path of the second bus 530 receive the transmitted emergency message.

Preferably, the control circuit 500 monitors the loop path of the first bus bar 520. When the message sent by the control circuit 500 through the first transceiver 510 of the management module 110 is not in the third transceiver 514 of the management module 110. Upon receipt, control circuit 500 is operable to notify the user that there is a communication disconnect. The control circuit 500 is further operable to retransmit the message that the third transceiver 514 of the management module 110 has not received via the loop path via the third transceiver 514 of the management module 110. In this manner, the third transceiver 514 of the management module 110 is a main structure for the first bus 520 of the third transceiver 514 that is still connected to the management module 110 through the loop path; and the management module 110 A transceiver 510 is the primary architecture of a portion of the first bus 520 that is coupled to the first transceiver 510 of the management module 110, hereinafter also referred to as the primary path. As such, although the first bus 520 is open, the first and second PoE devices 420 and the power managed module 140 are in communication with the management module 110. In one embodiment, the control circuit 500 further polls the first and second PoE devices 420 and the power managed module 140 through the individual primary and loop paths of the first bus 520, and reports which one to the user. The identifiers of the PoE device 420 and the power managed module 140 still maintain the individual primary and loop paths that are coupled to the first bus 520.

Preferably, the control circuit 500 monitors the loop path of the second bus 530. When the message sent by the control circuit 500 through the second transceiver 512 of the management module 110 is not in the fourth transceiver 516 of the management module 110. Upon receipt, control circuit 500 is operable to notify the user that there is a communication disconnect. The control circuit 500 is further operable to retransmit the message that the fourth transceiver 516 of the management module 110 has not received via the loop path via the fourth transceiver 516 of the management module 110. In this manner, the fourth transceiver 516 of the management module 110 is a main structure for the second bus 530 of the fourth transceiver 516 that is still connected to the management module 110 through the loop path; and the management module 110 The second transceiver 512 is a main structure of a part of the second bus bar 530 connected to the second transceiver 512 of the management module 110, which is hereinafter also referred to as a main path. As such, although the second bus 530 is open, the first and second PoE devices 420 and the power managed module 140 are in communication with the management module 110. In one embodiment, the control circuit 500 further polls the first and second PoE devices 420 and the power managed module 140 through the individual primary and loop paths of the second bus 530, and reports which one to the user. The identifiers of the PoE device 420 and the power managed module 140 still maintain the individual primary and loop paths that are coupled to the second bus 530.

Preferably, the time sensitive information sent by the control circuit 500 is maintained, and the second bus 530 remains open for use without being controlled by the control circuit 500 and one of the first and second PoE devices 420. Module 140 communicates causing control circuit 500 to regain control of second bus 530 with time loss.

11A is a schematic diagram of the management module 110 of FIG. 4B operating through the primary path of the first bus 520 and not detecting the transmitted message through the loop path of the first bus 520, in accordance with the principles of the present invention. Next, a high-level flow chart of the operation of transmitting the message again through the loop path of the first bus 520. At stage 5000, the message is transmitted to the destination address, for example, by the first transceiver 510 of the management module 110, through the primary path of the first bus. The management module 110 is preferably used as a bus master control circuit, and allocates addresses to individual devices of the first and second PoE devices 420, the power management module 140, and other found devices connected to the management module 110. .

At stage 5010, control circuit 500 monitors the loop path of first bus bar 520, for example, through third transceiver 514 of management module 110. When the message sent in phase 5000 is received through the loop path, the communication loop of the first bus is complete and returns in phase 5020.

When the message sent by the stage 5000 is not received through the loop path, the communication loop indicating the first bus 520 is incomplete. In stage 5030, the message of the stage 5000 is utilized by the management module 110, for example. The third transceiver 514 is retransmitted through the loop path of the first bus bar 520. In this manner, the first and second PoE devices 420, the power management module 140, and other devices still connected to the management module 110 through the loop path of the first bus bar 520 receive communication, and the first bus bar Whether 520 is disconnected or not.

In the selective phase 5040, the device is polled through the primary path of the first bus 520, and the responding unit is identified as being coupled to the management module 110 via the primary path. In the selective phase 5050, the device is polled through the loop path of the first bus bar 520, and the responding unit is identified as being coupled to the management module 110 through the loop path. At stage 5060, the management module 110 notifies the user of the communication disconnection. In the selective stage 5070, the identifiers of the units identified in the selective stages 5040, 5050 are further communicated to the user, thus indicating further information regarding the location of the disconnect. At stage 5020, the routine returns.

11B illustrates the management module 110 of FIG. 4B operating to broadcast emergency communications through the primary path of the second bus 530, and not detecting broadcast messages through the loop path of the second bus 530, in accordance with the principles of the present invention. Next, a high-level flowchart of the operation of re-broadcasting the message through the loop path of the second bus 530. At stage 6000, for example, the second transceiver 512 of the management module 110 is used to broadcast an emergency message to the destination address through the primary path of the second bus. The management module 110 preferably functions as a bus master control circuit and assigns addresses to the respective first and second PoE devices 420, the power managed modules 140, and/or other devices that discover connections.

In stage 6010, control circuit 500 monitors the loop path of second bus bar 530, for example, through fourth transceiver 516 of management module 110. When the message broadcasted in phase 6000 is received through the loop path, the communication loop of the second bus is intact, and in stage 6020, the routine returns.

In stage 6010, when the emergency message broadcasted by phase 6000 is not received through the loop path, the communication loop of the second bus 530 is not intact. In stage 6030, the emergency message of phase 6000 is transmitted through the second bus. The loop path of 530 is rebroadcast, for example, by the fourth transceiver 516 of the management module 110. As such, the first and second PoE devices 420, the power management module 140, and other devices that are connected to the management module 110 through the loop path of the second bus 530 receive emergency broadcast messages, and the second bus Whether 530 is disconnected or not.

In the selective phase 6040, the device is polled through the primary path of the second bus 530, and the responding unit is identified as being coupled to the management module 110 via the primary path. In the selective phase 6050, the device is polled through the loop path of the second bus bar 530, and the responding unit is identified as being coupled to the management module 110 through the loop path. At stage 6060, the management module 110 notifies the user of the communication disconnection. In the optional stage 6070, the identifiers of the units identified in the selective stages 6040, 6050 are further communicated to the user, thus indicating further information regarding the location of the disconnect. At stage 6020, the routine returns.

The routines of FIGS. 11A and 11B have been described by using the second bus bar 530 to broadcast an emergency message and communicating using the first bus bar 520; however, it is by no means limiting. The second bus 530 can be used to specify the address used by the first bus 520 without exceeding the scope of the present invention. The first bus bar 520 and the second bus bar 530 can be performed by a single cable. Thus, the disconnection of one of the first bus bar 520 and the second bus bar 530 is most likely represented in the first bus bar 520 and the second bus bar 530. The second person's open circuit does not exceed the scope of the present invention.

5 shows a high-level flow diagram of an embodiment of the management module 110 of FIGS. 4A, 4B operating to equally distribute power to all power managed modules in accordance with the principles of the present invention. At stage 1000, the power requirements of all connected modules are entered. In a particular embodiment, the minimum power demand and desired power requirements are supplied by the local power manager 320. It should be understood that in the present embodiment, the power manager 320 draws power regardless of the allocated power budget or unallocated power budget of the associated operational circuits 330, 460. In another embodiment, the power requirements are supplied by the user using a host computer or controller in communication with the management module 110. It should be understood that in the case where an unmanaged module is connected to draw power from the power supply 100, the power drawn by the unmanaged module will be input by the user using the host computer or controller communicating with the management module 110. . The power drawn by the unmanaged module must be deducted from the available power budget because the unmanaged module cannot respond to the management module 110 to reduce power consumption.

At stage 1010, all available power information for the modules whose power requirements have been entered at stage 1000 is entered. In a particular embodiment, the status information 405 combines the current indicator 410 to provide information regarding power utilization. In another embodiment, the host controller or computer can be operated by the user to input the rated power of each of the power supplies 100 having good power signals through the status information 405. In one embodiment, the rated power is discounted by the power usage estimates of the management module 110 and other unique losses in the system, including the power used by the various power managers 320. In another embodiment, the rated power is further discounted by each of the DC/DC converters 300. In another embodiment, the maximum power usage to be allocated by the power management module coupled to the rack and drawn from the power supply 100 is input at stage 1000, and the power is subtracted at stage 1010. In another embodiment, the power usage reported by power manager 320 to operating circuit 460 includes the power allocated by PoE management circuit 470 due to classification, regardless of the amount of power actually drawn by the PD.

At stage 1020, the power budget is assigned to each module on an equal basis, and the power requirements of each module are input at stage 1000. In one embodiment, when the desired power demand input at stage 1000 is fully met, no additional power is allocated to the module, and the difference in available power is distributed to other modules. In another embodiment, the power supplies are distributed as a percentage of the desired power demand, such that the power is equally distributed across the proportion of the maximum desired power. The foregoing embodiments are in no way limiting, and in particular are meant to utilize a combination of multiple factors to allocate a power budget. The determined power budget is transmitted to the power manager 320 of each module.

At stage 1030, the available power indicated by the combined current indicator 410 is continuously monitored as the status information 405 is continuously monitored, and the power requirements in the dynamic changes of the various modules are again input. It should be understood that the power requirements of each module may be dynamically changed. For example, if a module includes a PoE device, adding or removing a PD may change the PoE device to which the PD is connected or the PoE device from which the PD is removed. Power requirements.

At stage 1040, the dynamically variable power demand is compared to the continuously updated available power source. If at stage 1040, sufficient power is available for all modules, then stage 1020 as previously described is performed. It will be appreciated that additional power may be allocated or budgeted to at least one of the connected modules without affecting the operation of the other modules, as it has been determined that sufficient power is available from the power supply 100.

In the event that sufficient power is not available for all modules in stage 1040, at stage 1050, power is redistributed to all connected modules. The power supply is redistributed to each module on an equal basis. In one embodiment, if the dynamic desired power demand of the module input in stage 1030 is fully satisfied, no additional power is allocated to the module, so that the difference in available power is distributed to other modules. In another embodiment, the power supply is distributed as a percentage of the dynamic desired power demand, such that the power budget is equally programmed on a proportional to maximum expected power. The foregoing embodiments are by no means limiting, and in particular include the use of a combination of a plurality of factors to allocate a power budget. The determined power budget is transmitted to the power manager 320 of each module. Preferably, the redistribution according to stage 1050 is based on the same redistribution method used in stage 1020. After operation at stage 1050, stage 1030 as previously described is again performed.

The method of FIG. 5 is preferably performed at startup, and further preferably continuously performs the loop of stages 1020 to 1050; or is sensed on a periodic basis, or in response to one of dynamic power demand and power utilization. Change to execute.

6 shows a high-level flow diagram of an embodiment of the management module 110 of FIGS. 4A, 4B operating to distribute power to a power managed module in accordance with a prioritized order in accordance with the principles of the present invention. At stage 1100, the power requirements and priority order of all connected modules are entered. In a particular embodiment, the minimum power requirements and desired power requirements are provided by local power manager 320. It will be appreciated that in the present embodiment, power manager 320 draws power regardless of the power budget allocated to the associated operating circuits 330, 460 or the unallocated power budget. In another embodiment, at least one of the power requirements and the priority order is provided by the user using a host computer or controller in communication with the management module 110. It should be further understood that when power is extracted from the power supply 100 by connecting unmanaged modules, the power drawn by the unmanaged modules will be input by the user using the host computer or controller communicating with the management module 110. . The power drawn by the unmanaged modules entered will be deducted from any available power budget because the unmanaged modules are unable to respond to the management module 110 to reduce power consumption.

At stage 1110, all available power information for the modules whose power requirements have been entered at stage 1100 is entered. In a particular embodiment, the status information 405 combines the current indicator 410 to provide information regarding power utilization. In another embodiment, the host controller or computer can be operated by the user to input the rated power of each of the power supplies 100 having good power signals through the status information 405. In one embodiment, the rated power is discounted by the power usage estimates of the management module 110 and other unique losses in the system, including the power used by the various power managers 320. In another embodiment, the rated power is further discounted by each of the DC/DC converters 300. In another embodiment, the maximum power usage to be allocated by the power management module coupled to the rack and drawn from the power supply 100 is input at stage 1100, and the power is deducted at stage 1110. In another embodiment, the power usage reported by power manager 320 to operating circuit 460 includes the power allocated by PoE management circuit 470 due to classification, regardless of the amount of power actually drawn by the PD.

At stage 1120, the power budget is assigned to each module based on the priority order, and the power requirements of each module are input at stage 1100. A power supply requirement for a module with a high priority is to receive a power distribution up to its power supply before the power is assigned to a lower priority module. In one embodiment, the power is distributed to the modules having the same priority order on an equal basis, or distributed as a percentage of the desired power demand, such that each power module has the same priority order based on the ratio of the maximum expected power. Equalize the budget. The foregoing is in no way limiting, and in particular includes the use of a combination of factors to allocate power budgets. The determined power budget is transmitted to the power manager 320 of each module. Once power has been allocated to the module with the highest priority, then the power is similarly assigned to the module with the lower priority.

The foregoing has explained the modules with priority rankings, but it is by no means limiting. In one embodiment, the module may have a minimum operational requirement tied to a high priority, while an additional power requirement is tied to a lower priority. As such, the module can receive the lowest operating power level almost always, and is supplied with additional power distribution when additional power is supplied.

At stage 1130, the available power indicated by the combined current indicator 410 is continuously monitored as status information 405, and the power requirements in the dynamic changes of the various modules are again input. It should be understood that the power requirements of each module may be dynamically changed. For example, if a module includes a PoE device, adding or removing a PD may change the PoE device to which the PD is connected or the PoE device from which the PD is removed. Power requirements.

At stage 1140, the dynamically variable power demand is compared to the continuously updated available power source. If at stage 1140, sufficient power is available for all modules, then stage 1120 as previously described is performed. It will be appreciated that additional power may be allocated or budgeted to at least one of the connected modules without affecting the operation of the other modules, as it has been determined that sufficient power is available from the power supply 100.

In the event that sufficient power is not available for all modules in stage 1140, in stage 1150, power is redistributed to all connected modules. It is important to understand that at least one module allows its power budget to be reduced. The power supply is redistributed to each module in accordance with the priority order. Module power requirements with high priority are prioritized to receive power distribution up to their power requirements before the power is assigned to a module with a lower priority. In one embodiment, the power is distributed to a plurality of modules having equal priority orders based on an equal reference, or the power system is allocated as a percentage of the desired power demand, thus maximizing expectations for multiple modules having the same order The power is distributed in equal proportions to distribute power equally. The foregoing is in no way limiting, and specifically includes the use of a combination of factors to redistribute power budgets. The determined power budget is transmitted to the power manager 320 of each module. Once the power has been assigned to the highest priority order module, the power supply is reassigned to a lower priority order in a similar manner.

Preferably, the reallocation according to stage 1150 is performed in the same manner as the reassignment of stage 1120. After the operation of stage 1150, stage 1130 as previously described is performed again.

The method of FIG. 6 is preferably performed at startup, and further preferably continuously performs the loop of stages 1120-1150; or is sensed on a periodic basis, or in response to one of dynamic power requirements and power utilization. Change to execute.

7 shows a high-level flow diagram of an embodiment of the management module 110 of FIGS. 4A, 4B operating to allocate a minimum power level to all power managed modules in accordance with the principles of the present invention, and allocating additional available power based on a prioritized order. At stage 1200, the power requirements of all connected modules are entered, including minimum power requirements and desired power requirements and priority rankings. In a particular embodiment, the minimum power requirements and desired power requirements are provided by local power manager 320. It will be appreciated that in the present embodiment, power manager 320 draws power regardless of the power budget allocated to the associated operating circuits 330, 460 or the unallocated power budget. In another embodiment, at least one of the power requirements and the priority order is provided by the user using a host computer or controller in communication with the management module 110. It should be further understood that when power is extracted from the power supply 100 by connecting unmanaged modules, the information of the power drawn by the unmanaged module is used by the user to use the host computer that communicates with the management module 110 or Controller input. The power drawn by the unmanaged modules entered will be deducted from any available power budget because the unmanaged modules are unable to respond to the management module 110 to reduce power consumption.

At stage 1210, all available power information for the modules whose power requirements have been entered at stage 1200 is entered. In a particular embodiment, the status information 405 combines the current indicator 410 to provide information regarding power utilization. In another embodiment, the host controller or computer can be operated by the user to input the rated power of each of the power supplies 100 having good power signals through the status information 405. In one embodiment, the rated power is discounted by the power usage estimates of the management module 110 and other unique losses in the system, including the power used by the various power managers 320. In another embodiment, the rated power is further discounted by each of the DC/DC converters 300. In another embodiment, the maximum power usage to be allocated by the power management module coupled to the rack and drawn from the power supply 100 is input at stage 1200, and the power is subtracted at stage 1210. In another embodiment, the power usage reported by power manager 320 to operating circuit 460 includes the power allocated by PoE management circuit 470 due to classification, regardless of the amount of power actually drawn by the PD.

At stage 1220, the lowest power budget is equally distributed to each module, and the minimum power requirements for the modules have been entered at stage 1200. In another embodiment, the power supply is distributed to all modules on an equal basis until a minimum power demand is achieved that accounts for a certain percentage of the desired power demand, such that the power is equally distributed to have a ratio of the minimum required power. Multiple modules with the same priority. The foregoing embodiments are in no way limiting, and are particularly meant to include the use of a combination of factors to allocate a power budget. In one embodiment, the lowest power allocation is performed in order of priority order. The determined power budget is transmitted to the power manager 320 of each module.

At stage 1230, additional available power exceeding the power allocated by stage 1220 is assigned to each module based on a prioritized order, and the power requirements of each module have been entered at stage 1200. Prior to the power distribution to a module with a lower order, the power requirements of the module with a high priority are connected to the power distribution up to its power requirements. In one embodiment, the power supplies are distributed on an equal basis to modules having the same order, or are distributed as a percentage of the desired power demand, such that the power supplies are equally distributed to have the same priority order by a ratio of maximum expected power. Multiple modules. The foregoing description is in no way limiting, and in particular includes the use of a combination of factors to allocate power budgets. The determined additional power budget is transmitted to the power manager 320 of each module. Once the power has been assigned to the highest priority module, the power is similarly assigned to the lower priority module.

At stage 1240, the power utilization indicated by the combined current indicator 410 is continuously monitored as the status information 405 is continuously monitored, and the dynamically variable power demand of the plurality of modules is again input. It should be understood that the power requirements of multiple modules may be changed dynamically. For example, if a module includes a PoE device, adding or removing a PD will change the PoE device or PD from which the connected PoE device is removed. The power requirements associated with the PoE device.

At stage 1250, the dynamic variable power demand is compared to continuously updated power utilization. When a sufficient amount of power is available to all modules in stage 1250, stages 1230 and 1240 as described above are performed. It should be understood that since it is determined that a sufficient amount of power is available from the power supply 100, additional power may be allocated or budgeted to at least one of the connected modules without affecting the operation of the other modules.

When sufficient power is not available for use in all modules at stage 1250, at stage 1260, the power is reassigned to all connected modules. It is important to understand that the power budget of at least one module is reduced. The power supply is reassigned to each module based on the priority order, and the minimum required power is first allocated to all modules. Prior to the power distribution to a module with a lower priority, the power requirements of the module with a high priority are connected to the power distribution up to its power requirements. In one embodiment, the power supplies are reassigned to modules having the same order on an equal basis, or distributed as a percentage of the desired power demand, such that the power supplies are equally distributed to have the same priority order in terms of a ratio of maximum expected power. Multiple modules. The foregoing description is in no way limiting, and in particular includes the use of a combination of factors to allocate power budgets. The determined power budget is transmitted to the power manager 320 of each module. Once the power has been assigned to the highest priority module, the power is similarly assigned to the lower priority module.

Preferably, the redistribution according to stage 1260 follows the same method of allocation used in stages 1220 and 1230. After the operation of stage 1260, stage 1240 as previously described is again performed.

The method of FIG. 7 is preferably performed at startup, and further preferably continuously performs the loop of stages 1230-1260; or is sensed on a periodic basis, or in response to one of dynamic power requirements and power utilization. Change to execute.

8 is a high-level flow diagram of the operation of the management module 110 of FIGS. 4A, 4B to maintain the possible situation, including the ongoing operation of maintaining the power budget by the power management module, in accordance with an aspect of the present invention. In phase 2000, the power consumption of all connected modules is input. Although stage 2000 is described as input power consumption, it is by no means limiting. The minimum power demand or multiple power requirements and prioritized or allocated power that can be called but not utilized may also be entered without exceeding the scope of the present invention. In one embodiment, the management module 110 communicates with each of the power managers 320 and receives a power consumption indication. In another embodiment, the power consumption is input based on the current indicator 410 of the power supply 100.

In stage 2010, the power budget of each module is determined for various power conditions. In a particular embodiment, the power supply condition is defined by the loss of one or more of the plurality of power supplies 100 of FIG. 4A. When multiple power supplies 100 all have the same rating, only a single condition is required for any number of remaining power supplies. When some or all of the plurality of power supplies 100 have different power ratings, the total power output of the plurality of power supplies 100 (one of which has failed) is taken as a possible condition. The revised power budget is calculated for each module for individual possible situations. Preferably, the power budget is determined based on stage 1050 of Figure 5, stage 1150 of Figure 6, or stage 1260 of Figure 7. As such, while the operations of the individual stages 1050, 1150, and 1260 are responsive to small changes in power utilization or power requirements, the operation of stage 2010 develops possible actions for various possible power conditions.

Stage 2010 is described herein as being responsive to a status indicator 405 for each power supply having a binary value, where a value of "1" indicates full power utilization and a value of "0" indicates no power. However, it is by no means limiting, and it is specifically contemplated that there are multiple values, including derating due to increased temperature or stress.

Table I is representative of a table embodiment of possible scenarios resulting from stage 2010 in accordance with the principles of the present invention.

For a combination of various possible power indicator 405, the total available power is determined and the condition number is assigned. Determine the power available for all situations and determine the power budget for each module. Table I is described as allocating equal power budgets to the various modules, as explained above with respect to Figure 5, but without limitation. The power budget for a situation may not exceed the scope of the present invention based on the minimum power requirements, the current percentage of power utilization as entered in stage 2000, or considering prioritization. In one embodiment, power is first allocated to all of the power requirements with a high priority, and then the power is distributed to a power demand with a lower priority.

At stage 2020, the conditions associated with the power budget for each situation are communicated to the power manager 320 of the individual link module. When the value of the power indicator 405 of one of the power supplies 100 changes, the management module 110 will operate to broadcast the changed condition number, as described in detail later. In one embodiment, the broadcast is based on the set emergency bus, as previously described with respect to Figures 4A, 4B, 11A, and 11B.

Thus, the routine of FIG. 8 prepares and transmits a possible power event condition to each of the connected power managers 320 associated with the possible power budget for each situation. Preferably, the routine of FIG. 8 is executed on a cycle basis to maintain an update condition table. Therefore, one or more power supply 100 failures can quickly reduce the voltage to respond, thereby preventing overload due to the remaining power supply 100. Causes the entire system to crash.

9 is a high level flow diagram of the operation of the management module 110 of FIGS. 4A, 4B in the event that power conditions associated with one or more power supplies are changed in accordance with the principles of the present invention. At stage 3000, a change in the power state indicator is sensed. As previously explained, in one embodiment, the power state indicator presents a binary value indicating full power or no power; and in another embodiment, the power state indicator presents a plurality of values indicating that the derating is associated with the status indicator 405 The need for a connected power supply 100. At stage 3010, the table generated by stage 2010 of FIG. 8 is retrieved from memory and the status number associated with the current status indicator 405 is retrieved. At stage 3020, the status number retrieved at stage 3010 is broadcast to all power managers 320. In one embodiment, the status number is broadcasted in an emergency bus as set forth above with respect to Figures 4A, 4B, 11A, and 11B. It will be appreciated that when the power manager 320 receives the broadcast, the power manager 320 actuates to update the amount of power drawn to the amount received by the stage 2020 of FIG. In an embodiment of the PoE operating circuit, such as the operating circuit 460 of FIG. 4A, if desired, each PoE management circuit 470 accepts an indication to enable the 埠 能 , , , , , , , , , , , , , , , , , , , , Local power budget. In one embodiment of the operational circuit 330 of FIG. 4A, the power manager 320 reduces the power drawn by slowing down the clock speed or obscuring certain loads.

The foregoing management module 110 for transmitting power budgets for various possible situations has been described above, but is by no means limiting. In addition, the management module 110 can allocate a reduction in power distribution to each power manager for each case without exceeding the scope of the present invention. In such an embodiment, in response to the broadcast message of stage 3020, each power manager 320 operates to reduce the amount of power drawn to a pre-transmitted quantity based on the received status broadcast.

At stage 3030, the total power consumption is monitored, preferably by the current indicator 410 of Figure 4A, to ensure that the power supply is stable and that the rate of change in total power consumption is less than a predetermined limit. In a particular embodiment, stage 3030 is implemented using fuzzy logic. In the case where the total power consumption has not stabilized, the phase 3030 is repeated. In the event that the total power consumption has stabilized in stage 3030, at stage 3040, the call is reassigned as described above with respect to Figures 5-7. As such, operation of stage 3020 results in a rapid decrease in the draw power, and stage 3030 allows for stabilization under a lower power distribution. Redistribution according to the available power can be fine-tuned according to the stage 1030-1050 of Figure 5, stage 1130-1150 of Figure 6, or stage 1240-1260 of Figure 7.

Stage 3030 is described herein as observing the rate of change in total power consumption, but is by no means limiting. Stage 3030 can be replaced by a phase that waits from each of the plurality of power managers 320 to confirm that the power drawn is within budget, or has a predetermined delay, without exceeding the scope of the present invention.

As described above with respect to Table I, the implementation of the methods of Figures 8 and 9 allows for a pre-planned power supply reduction for power managed modules in the event of any change in power supply conditions. Table I is routinely updated according to the method of Figure 8. Table I shows the list of the various power managed modules and the allocated power budget when the power conditions are changed from the current power conditions to another.

10 is a high-level flow diagram of a power manager 320 operating to automatically detect a decrease in power utilization in accordance with the principles of the present invention and in response to which power consumption is reduced. In stage 4000, the voltage of the module under power management is monitored and the detected voltage is reduced. This voltage reduction is indicative of an overload condition. When communication with the management module 110 is in operation, the power budget of one or more of the power managers 320 can be reduced by the management module 110.

In stage 4000, in response to the sensed voltage decrease, and without communicating with the management module 110, the power manager 320 reduces power consumption at stage 4010. In a particular embodiment, power manager 320 communicates with individual operating circuits 330, 460 to reduce power consumption by a predetermined amount or by a predetermined percentage. In another embodiment, the power supply is consumed in multiple stages or levels, and the power supply is reduced to the next lower stage.

At stage 4020, the voltage of the power managed module is again monitored. In the event that the voltage has stabilized within the tolerance, at stage 4030, the power distribution of the operating circuits 330, 460 is maintained in accordance with the lower set point of stage 4010. As such, in the absence of communication with the management module 110, the lower set value is treated as a revised power budget.

At stage 4020, when the voltage has not stabilized within the tolerance, stage 4010 is again performed to further reduce the drawn power. It should be understood that the operation of the preferred stage 4010 does not reduce the power supply below the minimum operating level.

As such, the embodiment provides a system having at least one power source, a management module, and a plurality of power-managed modules in communication with the management module. Each of the power managed modules is configured to draw at least a plurality of power from the at least one power source. Each power managed module includes a power manager operable to control power drawn by the power managed module. The management module allocates a power budget to each of the power managed modules, and the power management module of the power management module is operable to control the operation of the module so that the power drawn is within the allocated budget.

Power managed modules may include PoE devices, switches, hubs, concentrators, computing devices, or other telecommunications modules that can operate at a variety of different power levels. The power managed module can be powered by an onboard power supply or preferably an onboard power supply. The central power source preferably includes at least one power supply, more preferably a plurality of power supplies, such that the operating power is supplied to the plurality of or all of the power managed modules within the rack in an optimized manner. The management module distributes power to each of the power managed modules that draw power.

The power budget is dynamically allocated based on predetermined criteria. In the case where the central power source has one or more power supply failures, in one embodiment, the management module instructs each of the power managed modules to change their power consumption to a pre-allocated amount. In another embodiment, when one or more power supply failures, the management module instructs each of the power managed modules to reduce their power consumption by a pre-allocated amount.

In one embodiment, the power manager of the at least one power managed module can sense a change in voltage level from the at least one power source and, in response thereto, reduce its power consumption. This response allows the power manager to automatically manage power when it is in communication with the management module.

In one embodiment, the central power source includes a plurality of power supplies arranged in an N+M redundant arrangement. The management module retains the power of the M redundant power supplies, so the budgeted power can be provided in the absence of one or more failed power supplies. As such, the present invention provides a chassis function for a decentralized rack-level device.

In one embodiment, the system provides a plurality of busbars, wherein the first busbar is used for communication of the ongoing power demand with the power budget, and the second busbar is used for emergency communications, such as at least one of the central power supplies Communication in the event of a power supply failure. A variety of possible situations are generated, preferably transmitted to the module in advance through the first bus. In the event of a power event, such as one or more power supply failures, one of the conditions is preferably implemented by a second bus broadcast implementation message. Still more preferably, at least one of the first bus bar and the second bus bar is arranged in a closed loop configuration, thus allowing communication interruptions to be identified via the monitoring loopback path.

It is to be understood that the various features of the present invention are described in the context of the various embodiments of the present invention, but may be provided in combination in a single embodiment. Conversely, various embodiments of the invention are described in the context of a single embodiment, but may be provided separately or in any sub-combination.

Unless otherwise defined, all technical and scientific terms used herein have the definitions as are commonly understood by those skilled in the art. Although the invention may be practiced or tested using methods similar or equivalent to those described herein, suitable methods are as described herein.

All publications, patent applications, patents, and other references herein are hereby incorporated by reference in their entirety. Once there is a contradiction, the patent specification includes its definition. In addition, the materials, methods, and examples are illustrative only and not intended to be limiting.

It is to be understood by those skilled in the art that the present invention is not limited to the particulars shown and described herein, but the scope of the invention is defined by the scope of the appended claims, including combinations and sub-combinations of the various features described above, and variations and modifications thereof. The study of the foregoing description will be clearly self-explanatory and not part of the prior art.

10. . . frame

20. . . Exchanger

30. . . Jumper panel

40. . . Data machine

50. . . Power strip

60. . . Link to AC mains power

100. . . Power Supplier

110. . . Management module

120. . . Power supply unit

130. . . Powered out patch panel

140. . . Power managed module

150. . . Exchanger

160. . . Power shelf

200. . . Onboard power supply

210. . . First power shelf

220. . . Second power shelf

300. . . DC/DC converter

305. . . Hot swap controller

310. . . dynamometer

320. . . Power manager

330. . . Operating circuit

400. . . system

405. . . Status indicator signal

410. . . Current indicator

420. . . PoE device

440. . . AC/DC converter

450. . . PoE enabled switch

460. . . Operating circuit

470. . . PoE management circuit

500. . . Control circuit

510. . . First transceiver

512. . . Second transceiver

514. . . Third transceiver

516. . . Fourth transceiver

518. . . First transceiver

519. . . Second transceiver

520. . . First bus

530. . . Second bus

1000-1050. . . stage

1100-1150. . . stage

1200-1260. . . stage

2000-2020. . . stage

3000-3040. . . stage

4000-4030. . . stage

5000-5070. . . stage

6000-6070. . . stage

1 shows a high-order view of a rack-mounted telecommunications device as taught by the prior art; FIG. 2A shows a high-order view of a first embodiment of a rack-mounted telecommunications device in accordance with the principles of the present invention; FIG. 2B shows a A high-level view of a second embodiment of a rack-mounted telecommunications device; FIG. 3 shows a high-order block diagram of an embodiment of a power managed module in accordance with the principles of the present invention; FIG. 4A shows a A high-level block diagram of an embodiment of a system for managing a module and a plurality of power supplies in communication with at least one power managed module; FIG. 4B is a diagram of a first data bus and a second data bus in accordance with the principles of the present invention; 4A is a high-level block diagram of an embodiment of a data link embodiment; FIG. 5 shows a high-level flow diagram of an operational embodiment of a management module for equally distributing power to all power managed modules in accordance with the principles of the present invention; A high-level flow diagram of an operational embodiment of a management module of a module that is prioritized for distributing power to a power managed module; FIG. 7 shows a high-order flow diagram in accordance with the present invention. A high-level flow chart of an operational embodiment of a management module that allocates a minimum power supply requirement to all power-managed modules and assigns any additional available power sources according to a priority order; FIG. 8 is a maintenance aspect of one aspect of the present invention. The situation diagram includes a high-level flow diagram of each of the ongoing operations of the power management module of the power management module; FIG. 9 is a diagram showing changes in power conditions associated with one or more power supplies in accordance with the principles of the present invention. High-level flow chart of the operation of the management module in the case; FIG. 10 is a high-level flow chart of the power manager operation according to the principle of the present invention to automatically detect the decrease in power utilization and reduce the power consumption in response thereto; FIG. The management module of FIG. 4B is operated according to the principle of the present invention to communicate through the primary path of the first bus and through the first convergence if the transmitted path is not detected through the loop path of the first bus a high-level flow diagram of the operation of the loop path to resend the message; and FIG. 11B is a management module of FIG. 4B operating through the second sink in accordance with the principles of the present invention The high-order flow chart of the operation of re-broadcasting the message through the loop path of the second bus line when the main path of the stream bar broadcasts the emergency communication and the broadcast message is not detected through the loop path of the second bus.

60. . . Link to AC mains power

100. . . Power Supplier

110. . . Management module

200. . . Onboard power supply

300. . . DC/DC converter

305. . . Hot swap controller

310. . . dynamometer

320. . . Power manager

330. . . Operating circuit

400. . . system

405. . . Status indicator signal

410. . . Current indicator

420. . . PoE device

440. . . AC/DC converter

450. . . PoE enabled switch

460. . . Operating circuit

470. . . PoE management circuit

Claims (32)

A rack-level power management system, the system comprising: at least one power source; a management module; and a plurality of power-managed modules that are in communication with the management module and coupled to draw power from the at least one power source Each of the plurality of power management modules includes: a power manager, and an operation circuit, and the operation circuit is operative to operate at a plurality of power levels in response to the power manager, the management module being operable Dynamically allocating a power budget to each of the plurality of power managed modules and dynamically communicating the allocated power budget to the power manager, each of the power managers operable to monitor and control The operating circuit of the power managed module can operate in a power draw level within the dynamically allocated power budget in response to its monitored content. The system of claim 1, wherein the management module is coupled to receive an indication of available power from the at least one power source, and dynamically allocate a power budget in response to the received indication. The system of claim 1, wherein the management module is operable to dynamically allocate a power budget based on a priority order, and each of the power managed modules is assigned a priority order. The system of claim 1, wherein the plurality of power-managed modules present: a minimum required power, and an additional power level exceeding the minimum required power; the management module is operable to The power budget is allocated by the minimum required power of the power managed module, and The power budget is allocated for additional power levels of at least one of the plurality of power managed modules when additional power is available. For example, the system of claim 4, wherein the power budget of the additional power level is allocated based on the priority order. The system of claim 1, wherein the plurality of power managers each include a power meter, and each of the plurality of power managers receives an indication of power drawn from the power meter, the monitoring The content is in response to the received power indication. The system of claim 1, wherein at least one of the plurality of power-managed modules is selected from an enabling switch, a switch, a hub, and a centralized power supply powered by an Ethernet network. A group of devices, computing devices, power supplies, and telecommunications modules. The system of claim 1, wherein the operation circuit of at least one of the plurality of power-managed modules comprises: a power supply device operable to be a ready-to-wire jumper panel. The system of claim 1, wherein the at least one power source and the management module are included in a single equipment rack. The system of claim 1, wherein the management module is further operative to input all available power, and the allocated power budget is responsive to the input of the total available power. The system of claim 10, further comprising: at least one unmanaged module that does not include a power manager, and the management module is operable to decrease from the all available power input The power requirement of the at least one unmanaged module. The system of claim 1, wherein the management module is further operable to transmit at least one power budget condition; the management module is further operable to monitor a condition of the at least one power source, and, when the monitored condition When the change is made, a command associated with a particular one of the at least one power budget is broadcast to the plurality of power managed modules; the plurality of power managed modules are operable to respond to the monitored content The operational circuitry of the power managed module is monitored and controlled to comply with the particular one of the power budget conditions in response to the broadcasted command. The system of claim 12, further comprising: a first bus bar and a second bus bar, wherein the management module is operable to transmit at least one power budget through the first bus bar, and Transmitting the command through the second bus. The system of claim 13, wherein at least one of the first bus bar and the second bus bar is configured as a closed loop configuration. The system of claim 1, further comprising: at least one communication bus, configured to be a closed loop configuration; the management module operable to communicate power through the at least one communication bus budget. The system of claim 15, wherein the management module is further operable to monitor a loopback path of the at least one communication bus, and when the communicated power budget of the communication fails to pass through the monitored loopback path When it is received, the power distribution budget is communicated through the loopback path. For example, the system of claim 1 of the patent scope, wherein the plurality of power receiving systems A power manager of at least one of the source managed modules is further operable to sense a reduced voltage and, in response to the sensed reduced voltage, to monitor and control an operational circuit associated with the power manager, And in response to its monitoring content to reduce the power drawn. A rack-level power management method includes: providing at least one power source; providing a plurality of power-managed modules coupled to draw power from the at least one power source; dynamically allocating a power budget to the plurality of received Each of the power management modules; and the dynamically allocated power budget of the transmission to the plurality of power managed modules, each of the power managed modules being monitored and responsive to the monitored content thereof The power drawn is controlled within the dynamically allocated power budget of the transmission. The method of claim 18, further comprising: receiving an indication of available power from the at least one power source, the dynamic allocation being responsive to the received indication. The method of claim 18, wherein the dynamic allocation is based at least in part on a priority order. The method of claim 18, wherein the plurality of power-managed modules are provided with: a minimum required power, and an additional power level exceeding the minimum required power, and the dynamic allocation phase includes : Allocating the minimum required power to each of the plurality of power managed modules, and allocating power to the additional power levels of at least one of the plurality of power managed modules when additional power is available budget. The method of claim 21, wherein the power budget is allocated to the additional power level based on a priority order. The method of claim 18, wherein the monitoring content comprises: receiving an indication of the power actually taken by the power managed module. The method of claim 18, wherein at least one of the plurality of power management modules provided is selected from the group consisting of an Ethernet enabled switch, a switch, and a hub. A group of concentrators, computing devices, power supply units, and telecommunications modules. The method of claim 18, wherein at least one of the plurality of power-managed modules provided comprises: a power supply device operable to be a ready-to-wire jumper panel. The method of claim 18, further comprising: inputting all available power, the step of dynamically allocating the power budget is responsive to all available power input. The method of claim 26, further comprising: providing at least one module that is not managed by the power source; and deducting the power of the at least one power-managed module from the all available power input demand. The method of claim 18, further comprising: monitoring a status of the at least one power source provided; transmitting at least one power budget condition to the plurality of power-managed modules provided; In the case where the monitored status changes, a command associated with a particular one of the transmitted at least one power budget is broadcast to the plurality of power managed modules; the plurality of power managed modules The captured power in response to the broadcasted command is monitored and controlled in response to the monitored content, thereby following the particular one of the power budget conditions transmitted. The method of claim 18, wherein the method further comprises: providing at least one of the plurality of power-managed modules to sense a reduced voltage; responsive to the sensed reduced voltage, reducing The power drawn by the power managed module. The method of claim 18, further comprising: monitoring a loopback path of the transmitted power distribution budget; and transmitting the loopback path if the transmitted power distribution budget is not sensed by monitoring Transfer unsensed power budget. The method of claim 18, further comprising: monitoring a status of the at least one power source provided; transmitting at least one power budget condition through the first bus to the plurality of power managed Module; Transmitting, by the second busbar different from the first busbar, a command associated with a particular one of the transmitted at least one power budget situation, when the monitored condition changes a power managed module; the plurality of power managed modules monitor and control the captured power in response to the monitored content, thereby complying with the particular one of the power budgets in response to the broadcasted command . A rack-level power management system, the system comprising: at least one power supply, comprising a plurality of power supplies; a management module; and a plurality of power-managed modules communicating with the management module and connecting Reaching power from the at least one power source; the plurality of power-managed modules each comprising: a power manager, and an operating circuit, and the operating circuit is operative to operate at a plurality of power levels in response to the power manager The management module is operable to dynamically allocate a power budget to each of the plurality of power managed modules, and dynamically communicate the allocated power budget to the power manager, and further operable The communication links a plurality of power conditions and associated power budgets to the power managed modules, each of the power managers operable to monitor power drawn by the operating circuitry of the power managed module, And controlling the power drawn by the operating circuit of the power managed module in response to its monitoring content, and the power within the allocated power budget can be Draw operating level, and in response to a communication from the management module, and the actuation of the communications link Dedicating one of a plurality of power supply conditions, and responsive to the monitored content to control an operational circuit of the power managed module to enable a power draw level within a power budget associated with the particular one of the activated conditions operating.