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WO2018085976A1 - Operating device with power factor correction and ripple compensation by change in operation - Google Patents

Operating device with power factor correction and ripple compensation by change in operation Download PDF

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Publication number
WO2018085976A1
WO2018085976A1 PCT/CN2016/105035 CN2016105035W WO2018085976A1 WO 2018085976 A1 WO2018085976 A1 WO 2018085976A1 CN 2016105035 W CN2016105035 W CN 2016105035W WO 2018085976 A1 WO2018085976 A1 WO 2018085976A1
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WO
WIPO (PCT)
Prior art keywords
energy store
light
emitting means
cbulk
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/105035
Other languages
French (fr)
Inventor
Quentin LIN
Max ZOU
Scofield LIN
Scotty ZHONG
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Tridonic GmbH and Co KG
Original Assignee
Tridonic GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Priority to CN201680090640.3A priority Critical patent/CN109952813B/en
Priority to PCT/CN2016/105035 priority patent/WO2018085976A1/en
Priority to EP16921213.1A priority patent/EP3510836B1/en
Publication of WO2018085976A1 publication Critical patent/WO2018085976A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/355—Power factor correction [PFC]; Reactive power compensation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/38—Switched mode power supply [SMPS] using boost topology
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/39—Circuits containing inverter bridges

Definitions

  • the invention relates to an operating device for a light-emitting means in accordance with the preamble of patent claim l and to a method in accordance with the preamble of patent claim 9.
  • Such operating devices are used in lighting systems in order to achieve lighting of rooms, routes or else escape routes.
  • the light-emitting means are actuated and, if necessary, activated by operating devices.
  • gas discharge lamps or else light-emitting diodes (LEDs) are used as light source.
  • the object of the invention consists in providing an operating device for a light-emitting means which has power factor correction and only transmits very low levels of interference.
  • the invention relates to an operating device for a light-emitting means comprising at least one driver circuit for operating at least one light-emitting means, an energy store, which feeds the driver circuit, a power factor correction circuit, which is preferably in the form of a boost converter or flyback converter and feeds the energy store, having a storage inductor, an actively clocked switch and a rectifying diode, characterized in that the voltage at the energy store is monitored, and the operation of the operating device is changed if the ripple of the voltage at the energy store exceeds a predetermined limit value. The operation of the driver circuit is changed and the output current by the driver circuit is increased.
  • the operating device preferably has means for estimating the life of the energy store to be expected. These means for estimating the life to be expected preferably evaluate the detected ripple of the voltage at the energy store. Optionally, in addition also further measurements or actuation variables can be evaluated within the operating device.
  • the invention also relates to a method for operating light-emitting means, wherein the light-emitting means is operated by at least one driver circuit, a power factor correction circuit feeds the energy store, and an energy store feeds the driver circuit, wherein the voltage at the energy store is monitored, and the operation of the light-emitting means is performed depending on the detected ripple of the voltage at the energy store.
  • the operation of the light-emitting means can preferably be changed when the detected ripple of the voltage at the energy store exceeds a predetermined limit value.
  • figure 1 shows an operating device according to the invention
  • figure 2 shows the power factor correction circuit of an operating device in accordance with the invention
  • figure 3 shows One example of a driver circuit (LED driver) which is in the form of a buck converter.
  • LED driver which is in the form of a buck converter.
  • Figure 1 shows an operating device A for a light-emitting means.
  • Such an operating device A for a light-emitting means typically has a driver circuit (lamp driver) for operating at least one light-emitting means (load) , an energy store, which feeds the driver circuit, a power factor correction circuit (PFC) , which can be in the form of a boost converter and feeds the energy store, having a storage inductor, an actively clocked switch and a rectifying diode.
  • a filter circuit and a rectifier circuit are preferably connected upstream of the power factor correction circuit.
  • the driver circuit is a resonant half-bridge for actuating a lamp load.
  • the driver circuit can also be formed by a resonant half-bridge with electrical isolation and rectification at the output for actuating LEDs.
  • Figure 2 shows a power factor correction circuit according to the invention for an operating device for a light-emitting means.
  • the power factor correction circuit is in the form of a boost converter and feeds the energy store Cbulk.
  • the energy store Cbulk is, for example, an electrolytic capacitor. It has a storage inductor Lb, an actively clocked switch S and a rectifying diode D.
  • the operating device (A) for a light-emitting means has at least one driver circuit for operating at least one light-emitting means, an energy store (Cbulk) , which feeds the driver circuit (LED driver) , and a power factor correction circuit, which is preferably in the form of a boost converter and feeds the energy store (Cbulk) , having a storage inductor (Lb) , an actively clocked switch (S) and a rectifying diode (D) .
  • the voltage at the energy store (Cbulk) is monitored, and the operation of the operating device (A) is changed if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
  • the operating device (A) for a light-emitting means can change the operation of the driver circuit (LED driver) and/or of the power factor correction circuit if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
  • the voltage at the energy store (Cbulk) can be decreased if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
  • the control loop or the control parameters of the power factor correction circuit can be changed.
  • the power output or output current by the driver circuit (LED driver) can be increased.
  • driver circuits LED drivers
  • the driver circuit (LED driver) is preferably a circuit with radiofrequency clocking having at least one actively clocked switch and one inductance (L) , which is charged and discharged by the radiofrequency clocking.
  • the driver circuit (LED driver) is, for example, a buck converter, an isolated flyback converter or an inverter circuit.
  • a plurality of light emitting means are fed directly or indirectly from the driver circuits (LED drivers) and, in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, at least some additional light-emitting means are connected to the driver circuit (LED driver) .
  • LED driver driver circuit
  • LED driver which is in the form of a buck converter is shown in figure 3.
  • the LEDs in the LED string are actuated depending on the clocking of the switch S.
  • the power output or output current by the driver circuit could be increased by clocking of the switch S with a increased duty factor.
  • the light-emitting means can be an LED or a gas discharge lamp.
  • the operating device (A) can transmit a fault message via an interface or optical signalling via the light-emitting means can take place in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded.
  • a power factor correction circuit feeds the energy store (Cbulk) and an energy store (Cbulk) feeds the driver circuit (LED driver) .
  • the voltage at the energy store (Cbulk) is monitored, and the operation of the light-emitting means is performed depending on the detected ripple of the voltage at the energy store (Cbulk) a predetermined limit value.
  • Temperature monitoring can be performed at the energy store (Cbulk) , the power factor correction circuit or the driver circuit (LED driver) and, as a result of a predetermined limit temperature being exceeded, a reduction in the power or current transmitted to the light-emitting means or else another change to the operation of the light-emitting means can be performed, and the value of the limit temperature to be predetermined can be set depending on the detected ripple of the voltage at the energy store (Cbulk) .
  • Such limitation of current or power transmitted to the light-emitting means in case of high temperature may prevent damages from the operating device.
  • a lighting unit having an operating device A for a light-emitting means comprising the power factor correction circuit according to the invention can be constructed.
  • the life to be expected of the energy store (Cbulk) and therefore also of the entire operating device (1) can be estimated.
  • the operating device (A) therefore has means for estimating the life to be expected of the energy store (Cbulk) .
  • Said means preferably evaluate the detected ripple of the voltage at the energy store (Cbulk) , but it is optionally also additionally possible for further measurements or actuation variables to be evaluated.
  • the operating device is designed for estimating the life to be expected of the energy store (Cbulk) on the basis of the detected ripple of the voltage at the energy store (Cbulk) .
  • the operating device (A) can also have further power stages connected in series.
  • an energy store can be arranged in each case between these power stages, it being possible for the voltage ripple of said energy stores to be monitored for identification of aging.
  • the ripple of the voltage at the energy store (Cbulk) can be read, for example, via an analog-to-digital converter.
  • This analog-to-digital converter can be part of an integrated control circuit, which can also influence the operation of the operating device.
  • this integrated control circuit can actuate, for example, the actively clocked switch (S) of the power factor correction circuit or else the switch (es) of the driver circuit (LED driver) .
  • the operating device (A) has an interface
  • reading of the life to be expected may also be possible via this interface.
  • the reading can for example automatically in the event that a predetermined value for the life to be expected is exceeded or else the present value for the life can be output in response to an external request via the interface.
  • the operating device (A) can transmit a fault message via an interface since, as described, the fact that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded indicates that a specific life of the energy store (Cbulk) has been exceeded.
  • a stepwise compensation of the ageing of the operating device, especially the energy store (Cbulk) as well as the ageing of the light-emitting means may be compensated and the light intensity of the light-emitting means may be held constant.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A method for operating light-emitting means, wherein the light-emitting means is operated by at least one driver circuit, a power factor correction circuit feeds the energy store, and an energy store feeds the driver circuit, characterized in that the voltage at the energy store is monitored, and the level of current output to the light-emitting means is depending on the detected ripple of the voltage at the energy store, wherein the operation of the light-emitting means by the driver circuit is increased when the detected ripple of the voltage at the energy store exceeds a predetermined limit value.

Description

OPERATING DEVICE WITH POWER FACTOR CORRECTION AND RIPPLE COMPENSATION BY CHANGE IN OPERATION
The invention relates to an operating device for a light-emitting means in accordance with the preamble of patent claim l and to a method in accordance with the preamble of patent claim 9.
Technical field
Such operating devices are used in lighting systems in order to achieve lighting of rooms, routes or else escape routes. Generally, in this case the light-emitting means are actuated and, if necessary, activated by operating devices. For such illumination, gas discharge lamps or else light-emitting diodes (LEDs) are used as light source.
Prior art
In accordance with the prior art, operating devices for light-emitting means with power factor correction are already used, but these still require a relatively large filter at the input.
Description of the invention
The object of the invention consists in providing an operating device for a light-emitting means which has power factor correction and only transmits very low levels of interference.
This object is achieved for an apparatus of the generic type in accordance with the invention by the characterizing features of patent claim 1 and for a method in accordance with the invention by the characterizing features of patent claim 9. Particularly advantageous embodiments of the invention are described in the dependent claims.
The invention relates to an operating device for a light-emitting means comprising at least one driver circuit for operating at least one light-emitting means, an energy store,  which feeds the driver circuit, a power factor correction circuit, which is preferably in the form of a boost converter or flyback converter and feeds the energy store, having a storage inductor, an actively clocked switch and a rectifying diode, characterized in that the voltage at the energy store is monitored, and the operation of the operating device is changed if the ripple of the voltage at the energy store exceeds a predetermined limit value. The operation of the driver circuit is changed and the output current by the driver circuit is increased.
The operating device preferably has means for estimating the life of the energy store to be expected. These means for estimating the life to be expected preferably evaluate the detected ripple of the voltage at the energy store. Optionally, in addition also further measurements or actuation variables can be evaluated within the operating device.
The invention also relates to a method for operating light-emitting means, wherein the light-emitting means is operated by at least one driver circuit, a power factor correction circuit feeds the energy store, and an energy store feeds the driver circuit, wherein the voltage at the energy store is monitored, and the operation of the light-emitting means is performed depending on the detected ripple of the voltage at the energy store. The operation of the light-emitting means can preferably be changed when the detected ripple of the voltage at the energy store exceeds a predetermined limit value.
Description of the preferred exemplary embodiments
The invention will be explained in more detail below with reference to the attached drawing, in which:
figure 1 shows an operating device according to the invention,
figure 2 shows the power factor correction circuit of an operating device in accordance with the invention, and
figure 3 shows One example of a driver circuit (LED driver) which is in the form of a buck converter.
The invention will be explained below with reference to an exemplary embodiment of an operating device for a light-emitting means.
Figure 1 shows an operating device A for a light-emitting means.
Such an operating device A for a light-emitting means typically has a driver circuit (lamp driver) for operating at least one light-emitting means (load) , an energy store, which feeds the driver circuit, a power factor correction circuit (PFC) , which can be in the form of a boost converter and feeds the energy store, having a storage inductor, an actively clocked switch and a rectifying diode. A filter circuit and a rectifier circuit are preferably connected upstream of the power factor correction circuit. In this example, the driver circuit is a resonant half-bridge for actuating a lamp load. Alternatively, the driver circuit can also be formed by a resonant half-bridge with electrical isolation and rectification at the output for actuating LEDs.
Figure 2 shows a power factor correction circuit according to the invention for an operating device for a light-emitting means.
The power factor correction circuit is in the form of a boost converter and feeds the energy store Cbulk. The energy store Cbulk is, for example, an electrolytic capacitor. It has a storage inductor Lb, an actively clocked switch S and a rectifying diode D.
The operating device (A) for a light-emitting means has at least one driver circuit for operating at least one light-emitting means, an energy store (Cbulk) , which feeds the driver circuit (LED driver) , and a power factor correction circuit, which is preferably in the form of a boost converter and feeds the energy store (Cbulk) , having a storage inductor (Lb) , an actively clocked switch (S) and a rectifying diode (D) . The voltage at the energy store (Cbulk) is monitored, and the operation of the operating device (A) is changed if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
The operating device (A) for a light-emitting means can change the operation of the driver circuit (LED driver) and/or of the power factor correction circuit if the ripple of the  voltage at the energy store (Cbulk) exceeds a predetermined limit value. The voltage at the energy store (Cbulk) can be decreased if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value. In the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, the control loop or the control parameters of the power factor correction circuit can be changed. In the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, the power output or output current by the driver circuit (LED driver) can be increased.
There may be several limit values for the ripple of the voltage at the energy store (Cbulk) , whereby for each of the limits a defined increase of current for the light emitting means may be defined. By definition of several limits a stepwise compensation of the ageing of the operating device, especially the energy store (Cbulk) as well as the ageing of the light-emitting means may be compensated and the light intensity of the light-emitting means may be held constant.
It is also possible for a plurality of driver circuits (LED drivers) to be fed directly or indirectly from the energy store (Cbulk) and, in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, at least some of the driver circuits (LED drivers) are connected in addition. The driver circuit (LED driver) is preferably a circuit with radiofrequency clocking having at least one actively clocked switch and one inductance (L) , which is charged and discharged by the radiofrequency clocking. By virtue of the driver circuit with radiofrequency clocking, the LED can be actuated with a high degree of efficiency. The driver circuit (LED driver) is, for example, a buck converter, an isolated flyback converter or an inverter circuit.
It is also possible that a plurality of light emitting means are fed directly or indirectly from the driver circuits (LED drivers) and, in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, at least some additional light-emitting means are connected to the driver circuit (LED driver) . For instance there may be a bridging switch arranged in parallel to one or more light emitting means which is permanently closed at the start of operation. In the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, the bridging switch may be  permanently opened and thus additional light emitting means would be powered by the driver circuit (LED driver) .
One example of a driver circuit (LED driver) which is in the form of a buck converter is shown in figure 3. The LEDs in the LED string are actuated depending on the clocking of the switch S. In this example, in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, the power output or output current by the driver circuit (LED driver) could be increased by clocking of the switch S with a increased duty factor.
The light-emitting means can be an LED or a gas discharge lamp.
The operating device (A) can transmit a fault message via an interface or optical signalling via the light-emitting means can take place in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded.
Therefore, the possibility is also provided of a method for operating light-emitting means, wherein the light-emitting means is operated by at least one driver circuit (LED driver) . A power factor correction circuit feeds the energy store (Cbulk) and an energy store (Cbulk) feeds the driver circuit (LED driver) .
The voltage at the energy store (Cbulk) is monitored, and the operation of the light-emitting means is performed depending on the detected ripple of the voltage at the energy store (Cbulk) a predetermined limit value.
Temperature monitoring can be performed at the energy store (Cbulk) , the power factor correction circuit or the driver circuit (LED driver) and, as a result of a predetermined limit temperature being exceeded, a reduction in the power or current transmitted to the light-emitting means or else another change to the operation of the light-emitting means can be performed, and the value of the limit temperature to be predetermined can be set depending on the detected ripple of the voltage at the energy store (Cbulk) . Such limitation of current or power transmitted to the light-emitting means in case of high temperature may prevent damages from the operating device.
Therefore, a lighting unit having an operating device A for a light-emitting means comprising the power factor correction circuit according to the invention can be constructed.
By evaluating the detected ripple of the voltage at the energy store (Cbulk) and further variables detected from measurements or an evaluation of actuation signals, such as, for example, the power drawn (or else emitted) or else the on time of the actively clocked switch (S) of the power factor correction circuit, the life to be expected of the energy store (Cbulk) and therefore also of the entire operating device (1) can be estimated.
In this way, it is also possible to correct a previous estimation of the life to be expected.
The operating device (A) therefore has means for estimating the life to be expected of the energy store (Cbulk) . Said means preferably evaluate the detected ripple of the voltage at the energy store (Cbulk) , but it is optionally also additionally possible for further measurements or actuation variables to be evaluated. The operating device is designed for estimating the life to be expected of the energy store (Cbulk) on the basis of the detected ripple of the voltage at the energy store (Cbulk) .
On the basis of the monitoring of the on time of the actively clocked switch (S) of the power factor correction circuit, in the case of monitoring of this variable over one or more system half-cycles, it is possible to draw a conclusion in respect of the characteristic of the transmitted power and also indirectly of the ripple of the voltage at the energy store (Cbulk) and/or the input voltage.
The operating device (A) can also have further power stages connected in series. In this case, an energy store can be arranged in each case between these power stages, it being possible for the voltage ripple of said energy stores to be monitored for identification of aging.
The ripple of the voltage at the energy store (Cbulk) can be read, for example, via an analog-to-digital converter. This analog-to-digital converter can be part of an integrated control circuit, which can also influence the operation of the operating device. Thus, this integrated control circuit can actuate, for example, the actively clocked switch (S) of the power factor correction circuit or else the switch (es) of the driver circuit (LED driver) .
If the operating device (A) has an interface, reading of the life to be expected may also be possible via this interface. The reading can for example automatically in the event that a predetermined value for the life to be expected is exceeded or else the present value for the life can be output in response to an external request via the interface. In the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, the operating device (A) can transmit a fault message via an interface since, as described, the fact that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded indicates that a specific life of the energy store (Cbulk) has been exceeded.
By definition of one or several limits a stepwise compensation of the ageing of the operating device, especially the energy store (Cbulk) as well as the ageing of the light-emitting means may be compensated and the light intensity of the light-emitting means may be held constant.

Claims (9)

  1. An operating device (A) for a light-emitting means comprising
    -at least one driver circuit for operating at least one light-emitting means,
    -an energy store (Cbulk) , which feeds the driver circuit (LED driver) ,
    -a power factor correction circuit, which is preferably in the form of a boost converter or flyback converter and feeds the energy store (Cbulk) , having a storage inductor (Lb) , an actively clocked switch (S) and a rectifying diode (D) , whereby the voltage at the energy store (Cbulk) is monitored, and the operation of the operating device (A) is changed if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value,
    characterized
    in that operation of the driver circuit (LED driver) is changed and the output current by the driver circuit (LED driver) is increased.
  2. The operating device (A) for a light-emitting means as claimed in claim 1,
    characterized
    in that the operation of the power factor correction circuit is changed if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
  3. The operating device (A) for a light-emitting means as claimed in claim 2,
    characterized in that the voltage at the energy store (Cbulk) is decreased if the ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
  4. The operating device (A) for a light-emitting means as claimed in claim 2 or 3,
    characterized
    in that, in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, the control loop or the control parameters of the power factor correction circuit is/are changed.
  5. The operating device (A) for a light-emitting means as claimed in claim 2, 
    characterized
    in that, in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded, additional light-emitting means are connected to the driver circuit (LED drivers) .
  6. The operating device (A) for a light-emitting means as claimed in one of claims 1 to 5,
    characterized
    in that the light-emitting means is an LED.
  7. The operating device (A) for a light-emitting means as claimed in one of claims 1 to 6,
    characterized
    in that the operating device (A) transmits or optically signals a fault message via an interface in the event that a limit value for the ripple of the voltage at the energy store (Cbulk) is exceeded.
  8. A lighting unit having an operating device (A) for a light-emitting means as claimed in one of claims 1 to 7.
  9. A method for operating light-emitting means, wherein the light-emitting means is operated by at least one driver circuit (LED driver) ,
    a power factor correction circuit feeds the energy store (Cbulk) , and an energy store (Cbulk) feeds the driver circuit (LED driver) ,
    characterized
    in that the voltage at the energy store (Cbulk) is monitored, and the level of current output to the light-emitting means is depending on the detected ripple of the voltage at the energy store (Cbulk) , wherein the operation of the light-emitting means by the driver circuit (LED driver) is increased when the detected ripple of the voltage at the energy store (Cbulk) exceeds a predetermined limit value.
PCT/CN2016/105035 2016-11-08 2016-11-08 Operating device with power factor correction and ripple compensation by change in operation Ceased WO2018085976A1 (en)

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CN201680090640.3A CN109952813B (en) 2016-11-08 2016-11-08 Method for operating a lighting device, operating device and lighting unit
PCT/CN2016/105035 WO2018085976A1 (en) 2016-11-08 2016-11-08 Operating device with power factor correction and ripple compensation by change in operation
EP16921213.1A EP3510836B1 (en) 2016-11-08 2016-11-08 Operating device with power factor correction and ripple compensation by change in operation

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EP3510836A4 (en) 2020-05-13
EP3510836B1 (en) 2023-01-04
EP3510836A1 (en) 2019-07-17
CN109952813B (en) 2021-06-22
CN109952813A (en) 2019-06-28

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