CN201213322Y - An Intelligent Lighting Energy Saver Controlled by IGBT - Google Patents

Abstract

The utility model relates to an intelligent illuminating electricity-saving appliance adopting IGBT control, comprising an output compensation transformer, a four-quadrant energy converter adopting the IGBT control, an IGBT drive circuit, a PWM control circuit and a microprocessor controlling device. The output compensation transformer is connected with the four-quadrant energy converter; the four-quadrant energy converter is connected with the IGBT drive circuit; the IGBT drive circuit is connected with the PWM control circuit; and the PWM control circuit is connected with the microprocessor controlling device. The four-quadrant energy converter of the utility model outputs compensation voltage through PWM controlling IGBT; addition or subtration operation is performed for the compensation voltage through the compensation transformer, and working voltage with the precision of minus or plus 1 percent needed by a lamp is finally output. The electricity-saving appliance saves the energy by more than 30 percent, prolongs the service life of an illuminating appliance, and has the advantages of stepless adjustment, no touch spot, no harmonic distortion, no mechanical movement parts, small volume, light weight and environment protection; and the design is more reasonable due to an electronic bypass with zero switching and uninterrupted power supplying as well as wireless automatic identification of the lighting action of a user.

Description

An Intelligent Lighting Energy Saver Controlled by IGBT

Technical field:

The utility model relates to an intelligent lighting power saver controlled by IGBT.

technical background:

At present, the leading products of lighting energy-saving products all adopt voltage regulation and voltage regulation to save electricity. The existing AC voltage regulation and voltage regulation control technologies are as follows: 1. Use servo motor rotation to drive carbon brush movement to switch transformer winding taps to achieve Voltage-regulating and stabilizing power saver; although the output voltage is steplessly regulated, due to the existence of motors and carbon brushes, it has disadvantages such as slow adjustment speed, short life, easy jamming, and large volume and weight; 2. Adopt Thyristor or contactor is used as an electronic switch to adjust the power saver of the tap position of the transformer winding. Although it overcomes the shortcomings of the former power saver, it has the disadvantage of poor output voltage accuracy because of the adjustment. Serious phenomena such as voltage jumps and intermittent lamp flicker caused by work; 3. The energy-saving equipment using ferromagnetic resonance reactors has disadvantages such as large noise, high heat generation, low efficiency, and large volume and weight; 4. The use of Although the power saver with thyristor chopper voltage regulation is stepless and continuous, due to the existence of harmonics, it will cause great pollution to the power grid, so it is difficult to be accepted by users and power management units.

Invention content:

In order to overcome the deficiencies of the prior art, the utility model relates to an intelligent lighting power saver controlled by IGBT, including an output compensation transformer, an electronic bypass, a four-quadrant energy converter controlled by IGBT, an IGBT drive circuit, and a PWM control circuit , Microprocessor control device, its features are the connection between the output compensation transformer and the four-quadrant energy converter, the connection between the electronic bypass relay and the compensation transformer, the connection between the four-quadrant energy converter and the IGBT drive circuit, the IGBT drive circuit and the microprocessor The connection of the control device, the utility model has the advantages of adopting the four-quadrant energy converter controlled by IGBT, the response speed is fast, the power saving rate can reach more than 30%, the output voltage accuracy can reach ±1%, stepless adjustment, touchless point, no harmonic distortion, no mechanical movement, small size, light weight, green and environmental protection, reasonable design, safe operation, low maintenance rate, significantly improving the service life of lighting appliances, full-featured street lamp control software, reducing manual maintenance and management Cost, to achieve remote control and network management of lighting control places.

Description of drawings:

Fig. 1 is the principle structural diagram of the utility model

Fig. 2 is the energy-saving output voltage curve diagram of the utility model

Fig. 3 is the structural diagram of the whole machine of the utility model

Fig. 4 is the CPU motherboard block diagram in the microprocessor control device of the present utility model

Fig. 5 is a block diagram of parameter sampling and A/D conversion board in the microprocessor control device of the present utility model

Fig. 6 is the block diagram of the DIO relay control board in the microprocessor control device of the present utility model

Detailed ways:

Below in conjunction with accompanying drawing the utility model is described in further detail:

An intelligent lighting power saver controlled by IGBT, as shown in Figure 1, includes a full-bridge rectifier circuit controlled by IGBT, and the AC input AC voltage of the mains is subjected to AC/DC full-wave conversion through the above-mentioned full-bridge rectifier circuit to generate a DC voltage Vab , the DC voltage Vab generated by the full-bridge rectifier circuit is converted to DC/AC through the inverter circuit controlled by the IGBT, and the converted PWM waveform is filtered by the LC filter circuit to generate an AC compensation voltage ΔV that is synchronous with the input, in-phase or reverse-phase, when When the mains input AC voltage is less than the given output AC voltage of the device, the AC compensation voltage ΔV is synchronized and in phase with the mains input AC voltage Vin; when the mains input AC voltage is greater than the given output AC voltage of the device, The AC compensation voltage ΔV is synchronized and reversed with the mains input AC voltage Vin; when the mains input AC voltage is equal to the given output AC voltage of the device, the AC compensation voltage ΔV is equal to 0V, so the energy converter controlled by IGBT is For four-quadrants, the AC compensation voltage ΔV is added to the input AC voltage of the mains through a compensation transformer connected in series between the input AC voltage of the mains and the output AC voltage of the device to obtain the output AC voltage Vout=Vin+ΔV/n of the device, Therefore, the device realizes the output high precision, up to ±1%, stepless adjustment, no contact, no harmonic distortion, no mechanical movement, small size, light weight, green and environmental protection functions, perfect and reasonable design, so that the operation It is safer, the maintenance rate is lower, and the stable output voltage significantly improves the service life of lighting appliances.

An intelligent lighting power saver controlled by IGBT. The utility model can implement a double power-saving working state during the process of adjusting the energy-saving voltage of the light source. The state instruction can come from the energy-saving output astronomy of the microprocessor control device of the equipment. The control interface can also come from external clocks, relays, PLC and other control devices. Once the start-up is completed, the power saver will provide a stable working voltage to the load until the device receives an energy-saving output command. According to the received command, the device automatically Adjust the output state, as shown in Figure 2, starting from the power-on of the device at time t0, the normal daily cycle work process is as follows:

t0~t1: Lighting soft-start stage: the output voltage slowly rises from the soft-start voltage of 200V to the rated voltage of 220V (can be set). After such a start-up control, the current and voltage impact of the lamp under cold start is reduced, thereby Increased lamp life;

t1~t2: lamp preheating stage: at this stage, the lamp works under the high-precision stable voltage of 220V±1%, and the lamp starts to preheat or work at full power under the stable rated voltage;

t2~t3: The working voltage of lamps drops slowly: After the power saver receives the energy-saving command sent by the microprocessor control device or the energy-saving command sent by the external equipment, the output voltage begins to drop slowly, and the output voltage after the drop can be from 220V to 180V. set up;

t3~t4: the first energy-saving stage: the lamp works under the preset output voltage of the first energy-saving stage;

t4~t5: After the energy-saving equipment receives the second-stage deep energy-saving command at the time point t4, the output voltage slowly drops to the stage of deep energy-saving work t5~t6, and the output voltage can be set arbitrarily from 220V~180V±1%;

t6~t7: The power saver receives and returns to the first energy-saving stage work instruction at the time point of t6, and the device returns to the first energy-saving stage of t7~t8;

t8~t9: The energy-saving device executes the command to turn off the light at the time point t8, or receives the command to return to the rated working state, and the device returns to T9~t10 to make the lamp enter the rated working stage again.

An intelligent lighting power saver controlled by IGBT, the microprocessor control device shown in Figure 6, in which the street lamp control software can wirelessly and automatically identify the user's action to turn on the light, when the working voltage of the lamp is in a low-voltage energy-saving state, as At a certain moment from t3 to t8, the device can automatically recognize the user's action of turning on the light, and automatically adjust the output voltage of the device to the rated 220V output working state. Adjust to the originally set energy-saving working voltage.

An intelligent lighting energy-saving device controlled by IGBT, as shown in Figure 3, includes a microprocessor control device connected to three single-phase energy-saving devices with the same structure and independent of each other, so each phase can be independent Adjustment, the working state can be set separately, and it can carry 100% unbalanced load. When a certain phase or two phases or three phases of the equipment fail, (take A phase as an example now) the micro-processing device sends a signal to switch the relay contact JA-1 is disconnected, JA-2 is closed, the compensation transformer is equivalent to a wire, and the power saver is in the state of electronic bypass output. The appliance will transition from the set voltage to the rated output voltage, and then from the rated output voltage to the energy-saving output voltage state. During this period, there is no on-off process of the main circuit, which realizes the operation of bypass zero switching and ensures uninterrupted power supply during the conversion process. switch, and at the same time ensure the uninterrupted power supply of the control circuit of the power saver under any fault conditions.

An intelligent lighting power saver controlled by IGBT is shown in Figure 4, Figure 5, and Figure 6 as a block diagram of a microprocessor control device. The microprocessor control device includes a parameter sampling and A/D conversion board, a CPU main board, and a DIO relay Control board and LCD display board, connection between parameter sampling and A/D conversion board and CPU main board, connection between CPU main board and DIO relay control board, connection between CPU main board and LCD display board, connection between CPU main board and PWM control device, micro The processor control device has multiple functions such as programmable functions, telemetry, remote signaling, remote control, automatic control, electric energy accumulation, real-time clock, large-screen Chinese LCD display, digital communication, etc. The parameter sampling and A/D conversion board includes input and output voltage signals Acquisition, main circuit current signal acquisition, CPU main board includes street light control software, setting module, electrical parameter calculation module, alarm circuit, RS232/485 communication interface, PWM control circuit signal output, DIO relay control board includes maintenance bypass control output, Alarm status output, intelligent fan control output, four-way astronomical time control output, electronic bypass output, high temperature alarm signal input, fuse status signal input, auxiliary power input, large-screen Chinese LCD display including voltage, current, active power, Data such as power, power factor, frequency, electricity, lighting rate, fault alarm record, input and output voltage, load current, overload protection, etc.

An intelligent lighting power saver controlled by IGBT is a microprocessor control device as shown in Figure 6, in which the DIO relay control board has 4 astronomical control outputs, which makes the user's switch light setting more convenient and trouble-free, and the user does not have to Adjust the switching time of lights according to seasonal changes; Lampcontrol remote monitoring software can understand and control the working conditions of any device under your jurisdiction in the office. Data reports and fault status reports are also very convenient and fast. Lighting rate alarm display enables users to know the lighting status of lamps without on-site inspection, which makes the user's management work more convenient and saves trouble. The intelligent RS232/485 multi-machine monitoring function and GPRS wireless monitoring function also adapt to the electronic Equipment monitoring requirements.

An intelligent lighting power saver controlled by IGBT, a microprocessor control device as shown in Figure 6, wherein the lighting management software LampControl3.0 has the following functions:

1. Geographic information display system: establish a digital map of urban lighting night landscape, including multiple maps of cities, districts, lines, and points. The content includes: geographical topography information, regional streets, key sections, key buildings and departments, etc.

2. Remote control function (remote control): It is the remote control of the lighting system on and off, including the following control methods:

(1) Automatic timing control: According to the geographical location (latitude and longitude) of the city and the weather conditions throughout the year, an on and off timing schedule is automatically generated, and the time for turning on and off the lights every day within a year (including: daily, holidays, switch lights on weekends, etc.), download to each monitoring terminal for execution.

(2) Temporary operation control: When there are major activities and maintenance inspections, a temporary control sub-schedule shall be formulated.

(3) Immediate operation: in emergency situations, such as on-site maintenance.

(4) Control the on and off of the lighting according to the ambient illuminance.

(5) The configuration control of different lighting modes can be set at will.

3. Long-distance measurement function (telemetry):

(1) Collect electrical parameters such as voltage, current, frequency, active power, reactive power, power factor, electrical degree, lighting rate of power-saving equipment.

(2) Collect the running status of the lighting system.

4. Remote adjustment (remote adjustment):

The output of preheating voltage and energy-saving voltage of energy-saving equipment can be adjusted on the remote monitoring software.

5. Long-distance information transmission (remote signaling):

The alarm information and working status of any device within the jurisdiction of the user can be transmitted to the monitoring center through RS232, RS485 or GPRS.

6. Long-distance video monitoring (remote viewing): Install cameras in key areas or places with night scenes, and monitor the night scenes and their control conditions intuitively in the monitoring center.

Claims (3)

1, a kind of intelligent lighting electricity saving device that adopts IGBT control, comprise the output compensator transformer, adopt the four-quadrant energy converter of IGBT control, the IGBT drive unit, the PWM control device, micro-processor control device, it is characterized in that major loop and export being connected of compensator transformer, the output compensator transformer is connected with the four-quadrant energy converter, electronics bypass relay and compensator transformer connection mutually, the four-quadrant energy converter is connected with the IGBT drive circuit, the IGBT drive circuit is connected with pwm control circuit, pwm control circuit is connected with micro-processor control device, the four-quadrant energy converter is by PWM control IGBT output bucking voltage, bucking voltage is by the compensator transformer method computing that adds deduct, and finally exports the needed precision of light fixture and is ± 1% lamp working voltage.

2, a kind of intelligent lighting electricity saving device that adopts IGBT control according to claim 1, it is characterized in that adopting the four-quadrant energy converter of IGBT control, comprise rectification circuit by IGBT control, inverter circuit by IGBT control, the filter of forming by capacitor and inductor, the zero switching device shifter of forming by high power relay, by the rectification circuit of IGBT control and being connected of the inverter circuit of controlling by IGBT, being connected of the filter of forming by the inverter circuit of IGBT control and capacitor and inductor, the filter that capacitor and inductor is formed is connected with the output compensator transformer, and the zero switching device shifter that high power relay is formed is connected with the output compensator transformer.

3, a kind of intelligent lighting electricity saving device that adopts IGBT control according to claim 1, it is characterized in that micro-processor control device, comprise parameter sampling and A/D change-over panel, cpu motherboard, DIO relay control board, LCD display panel, parameter sampling and A/D change-over panel are connected with cpu motherboard, cpu motherboard is connected with DIO relay control board, and cpu motherboard is connected with the LCD display panel, and cpu motherboard is connected with pwm control circuit.

Images