WO2012119473A1 - Power frequency modulation high frequency hid electronic ballast - Google Patents

Power frequency modulation high frequency hid electronic ballast Download PDF

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Publication number
WO2012119473A1
WO2012119473A1 PCT/CN2011/084608 CN2011084608W WO2012119473A1 WO 2012119473 A1 WO2012119473 A1 WO 2012119473A1 CN 2011084608 W CN2011084608 W CN 2011084608W WO 2012119473 A1 WO2012119473 A1 WO 2012119473A1
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circuit
frequency
high frequency
power
current
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PCT/CN2011/084608
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French (fr)
Chinese (zh)
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黄良洪
黄鹏云
宋春岩
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深圳市飞狮电子工业有限公司
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Publication of WO2012119473A1 publication Critical patent/WO2012119473A1/en

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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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
    • H05B41/2827—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations

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  • the invention relates to a high pressure gas discharge lamp (HID) electronic ballast, in particular to a power frequency modulation type high frequency HID electronic ballast.
  • HID high pressure gas discharge lamp
  • HID lamps are high intensity discharge lamps, also known as high intensity discharge lamps or high pressure gas discharge lamps. Commonly used are mercury lamps, sodium lamps, metal halide lamps (metal halide lamps) and xenon lamps. HID lamp is a new generation of high-efficiency light source widely used in the world. With the continuous increase of social infrastructure, the amount of HID lamp will increase greatly every year. Therefore, it is very important to design the electrical accessory for HID lamp. The use of electronic ballasts can achieve good performance and price ratio.
  • the electronic ballast Due to its remarkable energy-saving effect, the electronic ballast has been widely used in compact fluorescent lamps, fluorescent lamps, integrated lamps, etc. due to its small size, light weight and high reliability, and has achieved good economic and social benefits, along with electronic technology. With continuous development, the reliability of electronic components is continuously improved, and the cost is greatly reduced. HID lamp electronic ballasts will become an important part of green lighting engineering.
  • the electronic ballasts used in HID lamps mainly have the following two types: one is a high frequency HID electronic ballast using a high frequency plus low frequency modulation method, and the high frequency electronic ballast has a HID lamp for
  • the circuit has the advantages of simple circuit, high efficiency (up to 93%), low cost and reliable starting.
  • the startup adopts the LC resonant starting method, and only needs to connect a high-voltage capacitor in parallel with both ends of the HID lamp to enable the HID lamp to be reliably started, but this High-frequency electronic ballasts can not solve the acoustic resonance phenomenon of different tube pressures and bulbs of different manufacturers (ie stroboscopic problem); the other is to use 100 ⁇ 200HZ low frequency
  • the electronic ballast is powered by the scheme.
  • the electronic ballast is expensive.
  • the circuit is very complicated.
  • the low-frequency lighting is usually 300V-400VDC. It is realized by PWM step-down, full-bridge low-frequency conversion and high-voltage triggering. Usually more than 5 are needed.
  • the power tube has the disadvantages of high cost, low efficiency (less than 90%), poor stability and complicated circuit.
  • the high-frequency electronic ballast only needs two power tubes to form a half-bridge inverter through the choke inductor.
  • the object of the present invention is to provide a power frequency modulation type high frequency HID electronic ballast to solve the problem that the high frequency electronic ballast is prone to HID lamp stroboscopic and the low frequency electronic ballast exists.
  • the circuit has the disadvantages of complicated circuit, high cost, low efficiency and poor stability.
  • the present invention mainly adopts the following technical solutions:
  • a power frequency modulation type high frequency HID electronic ballast mainly comprises a power supply filter circuit, a rectification and filtering circuit, a high frequency conversion circuit and an HID lamp load, wherein one end of the power supply filter circuit is connected to the power input end, and the other end is rectified.
  • the filter circuit is connected to the high frequency conversion circuit, and the high frequency conversion circuit is connected to the HID lamp load, wherein: an inductive choke circuit is further connected between the high frequency conversion circuit and the HID lamp load, and the power supply filter circuit is further connected with a power frequency modulation control circuit, wherein the power frequency modulation control circuit is connected to the inductor choke circuit; the power supply filter circuit performs filtering processing on the alternating current input by the power input end, and divides the output frequency of the two channels into 50-60HZ.
  • the rectifier filter circuit performs rectification and filtering processing, and then outputs a DC voltage to the high-frequency conversion circuit, and the DC voltage is subjected to high-frequency conversion by the high-frequency conversion circuit to output a high-frequency Current to the inductor choke circuit; another AC current with a frequency of 50-60HZ is input to the power frequency modulation control circuit.
  • the modulation control circuit performs power frequency modulation and outputs a power frequency current with a frequency of 50-60 Hz to the inductor choke circuit; the inductor choke circuit has the high frequency current from the high frequency conversion circuit and the frequency from the power frequency modulation control circuit
  • the 50-60HZ power frequency current is superimposed and magnetically coupled, and output to the HID lamp load.
  • the high-frequency current is triggered to illuminate the HID lamp load, and the power frequency current of 50-60HZ is applied to the HID lamp load. Perform modulation control.
  • the inductor choke circuit includes a high frequency winding coil and a low frequency winding coil.
  • the inductor choke circuit is connected to the power frequency modulation control circuit through a low frequency winding coil, and the high frequency winding coil is magnetically coupled with the low frequency winding coil. together.
  • the inductor choke circuit is configured to perform high and low frequency, high and low voltage isolation processing on the high frequency winding coil and the low frequency winding coil.
  • the inductor choke circuit limits current processing of the high frequency current from the high frequency conversion circuit according to the power level of the HID lamp load.
  • the high frequency conversion circuit is a half bridge high frequency conversion circuit.
  • the high frequency conversion circuit is a full bridge high frequency conversion circuit.
  • the high frequency conversion circuit is a self-excited high frequency conversion circuit.
  • the high frequency conversion circuit is the excitation high frequency conversion circuit.
  • An active power factor correction circuit is further connected between the rectification filter circuit and the high frequency conversion circuit, and the low power factor from the rectification filter circuit is converted into a high power factor circuit of 99% or more by the active power factor correction circuit.
  • the power frequency modulation type high frequency HID electronic ballast further includes an abnormality protection circuit connected with the rectification filter circuit, the high frequency conversion circuit and the HID lamp load.
  • the invention adds a high frequency winding coil and a low frequency winding coil to the inductor choke circuit, and the high frequency winding coil and the low frequency winding coil are serially connected or connected to the power input end of the 50-60 Hz, through the high frequency
  • the winding coil and the low frequency winding coil are subjected to high and low frequency, high and low voltage isolation processing, so that the high frequency current outputted by the inductor choke circuit to the HID lamp load is superimposed with a power frequency current of 50-60 Hz, thereby completely eliminating the strobe of the high frequency HID lamp. problem.
  • the invention solves the problem that the high frequency electronic ballast cannot solve the strobe of the HID lamp, and solves the problem that the low frequency electronic ballast has high cost, low efficiency (less than 90%), poor stability and circuit. Complex shortcomings.
  • Figure 1 is a schematic block diagram of the present invention.
  • Figure 2 is a schematic diagram of the circuit of the present invention.
  • the core idea of the invention is that the invention uses an inductor choke circuit to limit the input high-frequency current, generate an operating current in accordance with the HID lamp load, and simultaneously input a power frequency current from the power frequency modulation control circuit with a frequency of 50-60 Hz.
  • FIG. 1 is a schematic block diagram of the present invention.
  • the power frequency modulation type high frequency HID electronic ballast of the invention mainly comprises a power supply filter circuit, a rectification and filtering circuit, a high frequency conversion circuit, a HID lamp load, an abnormality protection circuit, a power frequency modulation control circuit and an inductor turbulence.
  • the circuit wherein one end of the power supply filter circuit is connected with an external frequency of 50-60 Hz through the power input end, and the other end is divided into two outputs, one of which is connected with the rectifying and filtering circuit, and the other of which is directly connected with the power frequency modulation control circuit. connection.
  • the power supply filter circuit filters the AC input from the power input terminal, and outputs an AC power of 50-60HZ.
  • the AC power is divided into two outputs, one input to the rectifier filter circuit for rectification and filtering processing, and the output frequency is 0 DC.
  • Current if the direct current is a low power factor circuit, directly input to the high frequency conversion circuit for high frequency conversion, if the circuit is a high power factor circuit, input to the active power factor correction circuit for power factor correction, and then Then input to the high frequency conversion circuit for high frequency conversion, and whether the low power factor circuit or the high power factor circuit is subjected to high frequency conversion, the high frequency current must be input to the inductor choke circuit for current limiting processing. Only the lamp operating current that can meet the HID lamp load operation is generated.
  • the input frequency is 50-60HZ AC power
  • the other channel is input to the power frequency modulation control circuit
  • the power frequency modulation control circuit performs modulation control processing to generate the power frequency current with a frequency of 50-60HZ
  • the power frequency current is input into the inductor choke circuit, and is superimposed with the working current of the high frequency lamp generated after the current limiting, so that the current in the high frequency lamp operation includes a low frequency current component having a 50-60HZ envelope, and the high frequency is passed through the high frequency
  • the current achieves high-frequency control of the HID lamp load and the modulation control of the HID lamp load through the low frequency.
  • the inductor choke circuit performs current limiting processing on the input high-frequency current, and superimposes the power frequency current of the 50-60HZ from the power frequency modulation control circuit and the current after the current limiting, through a high-frequency winding coil and Realized by a low-frequency winding coil, the high-frequency winding coil and the low-frequency winding coil are subjected to high-low frequency, high-low voltage isolation processing, serially or parallelly connected to the 50-60HZ power input end, and the original equal-amplitude high-frequency lamp current is modulated into 50 -60HZ envelope component high frequency lamp current.
  • the power frequency modulation type high frequency HID electronic ballast further includes an abnormality protection circuit, which is connected with the rectification and filtering circuit, the high frequency conversion circuit and the HID lamp load, and is used for the above rectification and filtering circuit When the high-frequency conversion circuit and the HID lamp load are abnormal, protection is performed.
  • FIG. 2 is a circuit schematic diagram of the present invention.
  • the circuit includes a power supply filter circuit, a rectification filter circuit, a high frequency conversion circuit, an HID lamp load, an abnormality protection circuit, and a lamp current choke circuit.
  • the power supply filter circuit is used for filtering the power grid and the high frequency circuit to generate clutter, including filter capacitors C1, C2, C3, C4, common mode filter inductor T1, differential mode filter inductor T2, bleeder resistor R1, varistor RV1
  • the high frequency filter capacitors C1 and C2 are connected at two ends of the common mode filter inductor T1, and the bleeder resistor R1 is connected in parallel at both ends of the high frequency filter capacitor C2 to ensure the safety of the discharge after the power is off after the power is off.
  • the varistor RV1 is connected in parallel with the bleeder resistor R1 to suppress abnormal overvoltages that often occur in the circuit and protect the circuit from overvoltage.
  • the rectification filter includes a rectifier bridge composed of diodes D1, D2, D3, and D4 and a filter electrolytic capacitor C5 connected in parallel with the rectifier bridge.
  • the electrolytic capacitor C5 is used for energy storage filtering, and can filter the pulsating DC current. And converting the DC current with a large pulsation amplitude into a DC current with a small pulsation amplitude, and the AC current outputted by the power supply filter circuit is input into the rectifier bridge for full-bridge rectification to become a pulsating DC current, and the pulsating DC current is filtered by the electrolytic capacitor C5. It becomes a smoother DC input to the high frequency conversion circuit.
  • the high frequency conversion circuit in FIG. 2 is a self-excited half-bridge high frequency conversion circuit.
  • the above DC is input to C6 through R2 to charge C6.
  • the bidirectional trigger diode DB3 is discharged.
  • the transistors Q2 and Q1 are turned on in turn, and the oscillating transformer T3 outputs a high frequency to C8, and is input from C8 to the high frequency winding coil N1 of the lamp current choke circuit T4.
  • the lamp current choke circuit is composed of high frequency choke inductors T5, T4, wherein T4 includes a high frequency winding coil N1 and a low frequency winding coil N2, and the high frequency winding coil N1 and the low frequency winding coil N2 are magnetically coupled together, and the low frequency winding coil N2 and high-frequency choke inductor T5 are in the power supply loop, and C3 is a high-filter capacitor to prevent high-frequency return to the grid.
  • T3 is an oscillating transformer.
  • the high-frequency current of the N1 output of the oscillating transformer is sent to the resonant capacitor C9 via C8, T4, and N1. Since the HID lamp is connected to both ends of C9, the T4 high-frequency winding coils N1 and C9 resonate to generate 3- 4KV high voltage start HID lamp.
  • the 50-60HZ power frequency current passes through the low frequency winding coil N2 of T4, and the low frequency is coupled to the loop of the high frequency winding coil N1.
  • the high frequency current passing through the high frequency winding coil N1 is also coupled to the low frequency winding coil N2.
  • the high frequency current can be blocked by the high frequency choke inductor T5.
  • the power supply filter circuit, the rectification filter circuit, the high frequency conversion circuit, the HID lamp load and the abnormality protection circuit in the present invention are all known circuits, and can be combined with the lamp current choke circuit of the present invention in any combination, and can be realized. The technical effect of the present invention.

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Abstract

A power frequency modulation high frequency HID electronic ballast mainly comprises a power filter circuit, a rectification filter circuit, a high frequency switching circuit and an HID lamp load. One end of the power filter circuit is connected to a power input end, and the other end is connected to the high frequency switching circuit through the rectification filter circuit. The high frequency switching circuit is connected to the HID lamp load. An inductance choke circuit is further connected between the high frequency switching circuit and the HID lamp load, a power frequency modulation control circuit is further connected to the power filter circuit, and the power frequency modulation control circuit is connected to the inductance choke circuit. In the present invention, a high frequency winding coil and a low frequency winding coil are added to the inductance choke circuit, the high frequency winding coil and the low frequency winding coil are connected in series or in parallel with a power input of 50 to 60 Hz, and high and low frequency processing and high and low voltage processing are performed on the high frequency winding coil and the low frequency winding coil, so that a power frequency current of 50 to 60 Hz is superimposed on the high frequency current output of the inductance choke circuit to the HID lamp load, thereby completely eliminating the strobe problem of an HID lamp. Compared with the prior art, this solution solves the strobe problem of the HID lamp that cannot be solved by a high frequency electronic ballast, and overcomes the disadvantages of a low frequency electronic ballast such as high cost, low efficiency (less than 90%), poor stability and complex circuitry.

Description

工频调制式高频HID电子镇流器  Power frequency modulation type high frequency HID electronic ballast
技术领域：Technical field:
本发明涉及高压气体放电灯（HID）电子镇流器，特别是一种工频调制式高频HID电子镇流器。The invention relates to a high pressure gas discharge lamp (HID) electronic ballast, in particular to a power frequency modulation type high frequency HID electronic ballast.
背景技术：Background technique:
HID灯为高强度放电灯，也称为高亮度放电灯或高压气体放灯。常见的有汞灯、钠灯、金属卤化物灯（金卤灯）和氙气灯。HID灯是目前国际上广泛使用的新一代高效光源，随着社会基础建设不断加大，HID灯的用量每年都会有较大的增长，因此合理设计配套HID灯用的电器附件是非常重要的，而使用电子镇流器可以取得很好的性能价格比。HID lamps are high intensity discharge lamps, also known as high intensity discharge lamps or high pressure gas discharge lamps. Commonly used are mercury lamps, sodium lamps, metal halide lamps (metal halide lamps) and xenon lamps. HID lamp is a new generation of high-efficiency light source widely used in the world. With the continuous increase of social infrastructure, the amount of HID lamp will increase greatly every year. Therefore, it is very important to design the electrical accessory for HID lamp. The use of electronic ballasts can achieve good performance and price ratio.
电子镇流器因其显著的节能效果，体积小、重量轻、高可靠性，已经在紧凑荧光灯、日光灯、一体化灯等广泛应用，并取得了良好的经济效益和社会效益，随着电子技术不断发展，电子元器件可靠性不断提高，成本大幅度降低，HID灯电子镇流器将成为绿色照明工程的重要部分。Due to its remarkable energy-saving effect, the electronic ballast has been widely used in compact fluorescent lamps, fluorescent lamps, integrated lamps, etc. due to its small size, light weight and high reliability, and has achieved good economic and social benefits, along with electronic technology. With continuous development, the reliability of electronic components is continuously improved, and the cost is greatly reduced. HID lamp electronic ballasts will become an important part of green lighting engineering.
目前HID灯所采用的电子镇流器主要有以下两种：一种是采用高频加低频调制方法的高频HID电子镇流器，这种高频电子镇流器对于HID灯而言，具有电路简单、效率高（可达到93%）、成本低、启动可靠的优点，其启动采用LC谐振启动法，只需要在HID灯两端并联一只高压电容即能使HID灯可靠启动，但是这种高频电子镇流器无法解决同功率不同管压、不同厂家灯泡的声频共振现象（即频闪问题）；另一种是采用100~200HZ低频 方案供电的电子镇流器，这种电子镇流器价高.电路十分复杂，其低频点灯一般是将300V-400VDC.经PWM降压、全桥低频转换、高压触发实现，通常需要5只以上的功率管，因此具有成本高、效率低（小于90%）、稳定性差及电路复杂的缺点。而高频电子镇流只需两只功率管组成半桥逆变经扼流电感即可At present, the electronic ballasts used in HID lamps mainly have the following two types: one is a high frequency HID electronic ballast using a high frequency plus low frequency modulation method, and the high frequency electronic ballast has a HID lamp for The circuit has the advantages of simple circuit, high efficiency (up to 93%), low cost and reliable starting. The startup adopts the LC resonant starting method, and only needs to connect a high-voltage capacitor in parallel with both ends of the HID lamp to enable the HID lamp to be reliably started, but this High-frequency electronic ballasts can not solve the acoustic resonance phenomenon of different tube pressures and bulbs of different manufacturers (ie stroboscopic problem); the other is to use 100~200HZ low frequency The electronic ballast is powered by the scheme. The electronic ballast is expensive. The circuit is very complicated. The low-frequency lighting is usually 300V-400VDC. It is realized by PWM step-down, full-bridge low-frequency conversion and high-voltage triggering. Usually more than 5 are needed. The power tube has the disadvantages of high cost, low efficiency (less than 90%), poor stability and complicated circuit. The high-frequency electronic ballast only needs two power tubes to form a half-bridge inverter through the choke inductor.
发明内容：Summary of the invention:
为此，本发明的目的在于提供一种工频调制式高频HID电子镇流器，以解决目前采用高频电子镇流器容易出现HID灯频闪的问题、以及低频电子镇流器所存在的电路复杂、成本高、效率低、稳定性差的缺点。Therefore, the object of the present invention is to provide a power frequency modulation type high frequency HID electronic ballast to solve the problem that the high frequency electronic ballast is prone to HID lamp stroboscopic and the low frequency electronic ballast exists. The circuit has the disadvantages of complicated circuit, high cost, low efficiency and poor stability.
为实现上述目的，本发明主要采用以下技术方案：In order to achieve the above object, the present invention mainly adopts the following technical solutions:
一种工频调制式高频HID电子镇流器，主要包括有电源滤波电路、整流滤波电路、高频转换电路和HID灯负载，所述电源滤波电路一端与电源输入端连接，另一端通过整流滤波电路与高频转换电路连接，高频转换电路与HID灯负载连接，其中：所述高频转换电路与HID灯负载之间还连接有一电感扼流电路，所述电源滤波电路上还连接有一工频调制控制电路，所述工频调制控制电路与电感扼流电路连接；所述电源滤波电路对由电源输入端输入的交流电流进行滤波处理，并分两路输出频率为50-60HZ的交流电流，一路频率为50-60HZ的交流输入到整流滤波电路，由整流滤波电路进行整流滤波处理后输出直流电压到高频转换电路，该直流电压经过高频转换电路进行高频转换后输出高频电流到电感扼流电路；另一路频率为50-60HZ的交流电流输入到工频调制控制电路，经过工频调制控制电路进行工频调制后输出频率为50-60HZ的工频电流到电感扼流电路；所述电感扼流电路对上述来自高频转换电路的高频电流和来自工频调制控制电路频率为50-60HZ的工频电流进行电流叠加及磁场耦合处理，并输出到HID灯负载，由上述高频电流对HID灯负载进行触发点亮，由频率为50-60HZ的工频电流对HID灯负载进行调制控制。A power frequency modulation type high frequency HID electronic ballast mainly comprises a power supply filter circuit, a rectification and filtering circuit, a high frequency conversion circuit and an HID lamp load, wherein one end of the power supply filter circuit is connected to the power input end, and the other end is rectified. The filter circuit is connected to the high frequency conversion circuit, and the high frequency conversion circuit is connected to the HID lamp load, wherein: an inductive choke circuit is further connected between the high frequency conversion circuit and the HID lamp load, and the power supply filter circuit is further connected with a power frequency modulation control circuit, wherein the power frequency modulation control circuit is connected to the inductor choke circuit; the power supply filter circuit performs filtering processing on the alternating current input by the power input end, and divides the output frequency of the two channels into 50-60HZ. Current, a frequency input of 50-60HZ AC input to the rectification filter circuit, the rectifier filter circuit performs rectification and filtering processing, and then outputs a DC voltage to the high-frequency conversion circuit, and the DC voltage is subjected to high-frequency conversion by the high-frequency conversion circuit to output a high-frequency Current to the inductor choke circuit; another AC current with a frequency of 50-60HZ is input to the power frequency modulation control circuit. The modulation control circuit performs power frequency modulation and outputs a power frequency current with a frequency of 50-60 Hz to the inductor choke circuit; the inductor choke circuit has the high frequency current from the high frequency conversion circuit and the frequency from the power frequency modulation control circuit The 50-60HZ power frequency current is superimposed and magnetically coupled, and output to the HID lamp load. The high-frequency current is triggered to illuminate the HID lamp load, and the power frequency current of 50-60HZ is applied to the HID lamp load. Perform modulation control.
其中所述电感扼流电路中包括有一高频绕组线圈和一低频绕组线圈，所述电感扼流电路通过低频绕组线圈与工频调制控制电路连接，所述高频绕组线圈与低频绕组线圈磁耦合一起。The inductor choke circuit includes a high frequency winding coil and a low frequency winding coil. The inductor choke circuit is connected to the power frequency modulation control circuit through a low frequency winding coil, and the high frequency winding coil is magnetically coupled with the low frequency winding coil. together.
其中所述电感扼流电路用于对所述高频绕组线圈与低频绕组线圈进行高低频、高低压隔离处理。The inductor choke circuit is configured to perform high and low frequency, high and low voltage isolation processing on the high frequency winding coil and the low frequency winding coil.
其中所述电感扼流电路根据HID灯负载的功率大小对来自高频转换电路的高频电流进行限流处理。The inductor choke circuit limits current processing of the high frequency current from the high frequency conversion circuit according to the power level of the HID lamp load.
其中所述高频转换电路为半桥高频转换电路。The high frequency conversion circuit is a half bridge high frequency conversion circuit.
其中所述高频转换电路为全桥高频转换电路。The high frequency conversion circuit is a full bridge high frequency conversion circuit.
其中所述高频转换电路为自激式高频转换电路。The high frequency conversion circuit is a self-excited high frequency conversion circuit.
其中所述高频转换电路为它激式高频转换电路。The high frequency conversion circuit is the excitation high frequency conversion circuit.
其中所述整流滤波电路和高频转换电路之间还连接有一有源功率因数校正电路，通过该有源功率因数校正电路将来自整流滤波电路的低功率因数转换成99%以上高功率因数电路。An active power factor correction circuit is further connected between the rectification filter circuit and the high frequency conversion circuit, and the low power factor from the rectification filter circuit is converted into a high power factor circuit of 99% or more by the active power factor correction circuit.
其中该工频调制式高频HID电子镇流器还包括有一异常保护电路，该异常保护电路与整流滤波电路、高频转换电路和HID灯负载连接。The power frequency modulation type high frequency HID electronic ballast further includes an abnormality protection circuit connected with the rectification filter circuit, the high frequency conversion circuit and the HID lamp load.
本发明通过在电感扼流电路中增加一个高频绕组线圈和一个低频绕组线圈，并使该高频绕组线圈和低频绕组线圈串或并接于50-60HZ的电源输入端，通过对该高频绕组线圈和低频绕组线圈进行高低频、高低压隔离处理，使电感扼流电路输出到HID灯负载的高频电流中叠加有50-60HZ的工频电流，从而彻底消除高频HID灯频闪的问题。与现有技术相比，本发明解决了高频电子镇流器无法解决的HID灯频闪的问题，而且解决了低频电子镇流器成本高、效率低（小于90%）、稳定性差及电路复杂的缺点。The invention adds a high frequency winding coil and a low frequency winding coil to the inductor choke circuit, and the high frequency winding coil and the low frequency winding coil are serially connected or connected to the power input end of the 50-60 Hz, through the high frequency The winding coil and the low frequency winding coil are subjected to high and low frequency, high and low voltage isolation processing, so that the high frequency current outputted by the inductor choke circuit to the HID lamp load is superimposed with a power frequency current of 50-60 Hz, thereby completely eliminating the strobe of the high frequency HID lamp. problem. Compared with the prior art, the invention solves the problem that the high frequency electronic ballast cannot solve the strobe of the HID lamp, and solves the problem that the low frequency electronic ballast has high cost, low efficiency (less than 90%), poor stability and circuit. Complex shortcomings.
附图说明：BRIEF DESCRIPTION OF THE DRAWINGS:
图1为本发明的原理框图。Figure 1 is a schematic block diagram of the present invention.
图2为本发明的电路原理图。Figure 2 is a schematic diagram of the circuit of the present invention.
具体实施方式：detailed description:
本发明的核心思想是：本发明利用电感扼流电路对输入的高频电流进行限流，产生符合HID灯负载的工作电流，同时将来自工频调制控制电路频率为50-60HZ的工频电流与上述限流后符合HID灯负载的高频工作电流进行叠加，以产生含有50-60HZ包络成分的高频电流，输出到HID灯负载，从而简化电路、降低成本以及彻底消除高频HID灯频闪的问题。The core idea of the invention is that the invention uses an inductor choke circuit to limit the input high-frequency current, generate an operating current in accordance with the HID lamp load, and simultaneously input a power frequency current from the power frequency modulation control circuit with a frequency of 50-60 Hz. Superimposing with the high-frequency operating current corresponding to the HID lamp load after the current limiting to generate a high-frequency current containing a 50-60HZ envelope component, and outputting to the HID lamp load, thereby simplifying the circuit, reducing the cost, and completely eliminating the high-frequency HID lamp. Strobe problem.
为阐述本发明的思想及目的，下面将结合附图和具体实施例对本发明做进一步的说明。The present invention will be further described with reference to the accompanying drawings and specific embodiments.
请参见图1所示，图1为本发明的原理框图。本发明所述的工频调制式高频HID电子镇流器，主要包括有电源滤波电路、整流滤波电路、高频转换电路、HID灯负载、异常保护电路、工频调制控制电路和电感扼流电路，其中电源滤波电路一端通过电源输入端与外部频率为50-60HZ的交流电连接，另一端则分为两路输出，其中一路与整流滤波电路连接，而另一路则直接与工频调制控制电路连接。Referring to FIG. 1, FIG. 1 is a schematic block diagram of the present invention. The power frequency modulation type high frequency HID electronic ballast of the invention mainly comprises a power supply filter circuit, a rectification and filtering circuit, a high frequency conversion circuit, a HID lamp load, an abnormality protection circuit, a power frequency modulation control circuit and an inductor turbulence. The circuit, wherein one end of the power supply filter circuit is connected with an external frequency of 50-60 Hz through the power input end, and the other end is divided into two outputs, one of which is connected with the rectifying and filtering circuit, and the other of which is directly connected with the power frequency modulation control circuit. connection.
电源滤波电路对由电源输入端输入的交流进行滤波处理，输出频率为50-60HZ的交流电，该交流电分为两路输出，一路输入到整流滤波电路进行整流滤波处理，并输出频率为0的直流电流，如果该直流电为低功率因数的电路，则直接输入到高频转换电路进行高频转换，如果该电路为高功率因数的电路，则输入到有源功率因数校正电路进行功率因数校正，然后再输入到高频转换电路进行高频转换，而不论是低功率因数的电路还是高功率因数的电路经过高频转换之后，该高频电流都必须输入到电感扼流电路中进行限流处理，才产生可符合HID灯负载工作的灯工作电流。The power supply filter circuit filters the AC input from the power input terminal, and outputs an AC power of 50-60HZ. The AC power is divided into two outputs, one input to the rectifier filter circuit for rectification and filtering processing, and the output frequency is 0 DC. Current, if the direct current is a low power factor circuit, directly input to the high frequency conversion circuit for high frequency conversion, if the circuit is a high power factor circuit, input to the active power factor correction circuit for power factor correction, and then Then input to the high frequency conversion circuit for high frequency conversion, and whether the low power factor circuit or the high power factor circuit is subjected to high frequency conversion, the high frequency current must be input to the inductor choke circuit for current limiting processing. Only the lamp operating current that can meet the HID lamp load operation is generated.
经过电源滤波电路滤波后输入频率为50-60HZ的交流电，另一路则输入到工频调制控制电路，由工频调制控制电路进行调制控制处理，产生频率为50-60HZ的工频电流，并将该工频电流输入到电感扼流电路中，与上述限流后产生的高频灯工作电流进行叠加，使高频灯工作中电流包含有50-60HZ包络的低频电流成份，通过该高频电流实现对HID灯负载高频控制点亮，以及通过低频对HID灯负载进行调制控制工作。After the power supply filter circuit filters, the input frequency is 50-60HZ AC power, and the other channel is input to the power frequency modulation control circuit, and the power frequency modulation control circuit performs modulation control processing to generate the power frequency current with a frequency of 50-60HZ, and The power frequency current is input into the inductor choke circuit, and is superimposed with the working current of the high frequency lamp generated after the current limiting, so that the current in the high frequency lamp operation includes a low frequency current component having a 50-60HZ envelope, and the high frequency is passed through the high frequency The current achieves high-frequency control of the HID lamp load and the modulation control of the HID lamp load through the low frequency.
其中电感扼流电路对输入的高频电流进行限流处理、以及对来自工频调制控制电路的50-60HZ的工频电流与限流后电流的叠加处理，都是通过一个高频绕组线圈和一个低频绕组线圈实现的，该高频绕组线圈和低频绕组线圈经过高低频、高低压隔离处理后，串或并接于50-60HZ电源输入端，将原等幅高频灯电流调制成含有50-60HZ包络成分的高频灯电流。The inductor choke circuit performs current limiting processing on the input high-frequency current, and superimposes the power frequency current of the 50-60HZ from the power frequency modulation control circuit and the current after the current limiting, through a high-frequency winding coil and Realized by a low-frequency winding coil, the high-frequency winding coil and the low-frequency winding coil are subjected to high-low frequency, high-low voltage isolation processing, serially or parallelly connected to the 50-60HZ power input end, and the original equal-amplitude high-frequency lamp current is modulated into 50 -60HZ envelope component high frequency lamp current.
而对于不同功率的HID灯，只需要调节上述高频绕组线圈和低频绕组线圈的线圈绕组匝数即可获得不同的调制度，从而达到彻底消除HID灯的频闪现像。For HID lamps of different powers, it is only necessary to adjust the number of coil windings of the above-mentioned high-frequency winding coil and low-frequency winding coil to obtain different modulation degrees, thereby completely eliminating the stroboscopic phenomenon of the HID lamp.
另外，在工频调制式高频HID电子镇流器中还包括有一个异常保护电路，该异常保护电路与整流滤波电路、高频转换电路和HID灯负载连接，用于对上述的整流滤波电路、高频转换电路和HID灯负载出现异常情况时，进行保护。In addition, the power frequency modulation type high frequency HID electronic ballast further includes an abnormality protection circuit, which is connected with the rectification and filtering circuit, the high frequency conversion circuit and the HID lamp load, and is used for the above rectification and filtering circuit When the high-frequency conversion circuit and the HID lamp load are abnormal, protection is performed.
如图2所示，图2为本发明的电路原理图。其中该电路包括有电源滤波电路、整流滤波电路、高频转换电路、HID灯负载、异常保护电路和灯电流扼流电路。As shown in FIG. 2, FIG. 2 is a circuit schematic diagram of the present invention. The circuit includes a power supply filter circuit, a rectification filter circuit, a high frequency conversion circuit, an HID lamp load, an abnormality protection circuit, and a lamp current choke circuit.
电源滤波电路用于滤去电网及高频电路产生杂波，其包括有滤波电容C1、C2、C3、C4，共模滤波电感T1，差模滤波电感T2，泄放电阻R1、压敏电阻RV1，其中高频滤波电容C1、C2连接在共模滤波电感T1的两端，泄放电阻R1并联在高频滤波电容C2两端，以保证电源无负载时断电后放电对人身的安全，而压敏电阻RV1与泄放电阻R1并联，可以抑制电路中经常出现的异常过电压，保护电路免受过电压的损害。The power supply filter circuit is used for filtering the power grid and the high frequency circuit to generate clutter, including filter capacitors C1, C2, C3, C4, common mode filter inductor T1, differential mode filter inductor T2, bleeder resistor R1, varistor RV1 The high frequency filter capacitors C1 and C2 are connected at two ends of the common mode filter inductor T1, and the bleeder resistor R1 is connected in parallel at both ends of the high frequency filter capacitor C2 to ensure the safety of the discharge after the power is off after the power is off. The varistor RV1 is connected in parallel with the bleeder resistor R1 to suppress abnormal overvoltages that often occur in the circuit and protect the circuit from overvoltage.
整流滤波中包括有一个由二极管D1、D2、D3、D4组成的整流桥和一个与该整流桥并联的滤波电解电容C5，该电解电容C5用于储能滤波，可对脉动直流电流进行滤波处理及将脉动幅度较大的直流电流转化成脉动幅度很小的直流电流，电源滤波电路输出的交流电流输入到整流桥中进行全桥整流变成脉动直流电流，该脉动直流电流经过电解电容C5滤波后变成较平滑的DC输入到高频转换电路。The rectification filter includes a rectifier bridge composed of diodes D1, D2, D3, and D4 and a filter electrolytic capacitor C5 connected in parallel with the rectifier bridge. The electrolytic capacitor C5 is used for energy storage filtering, and can filter the pulsating DC current. And converting the DC current with a large pulsation amplitude into a DC current with a small pulsation amplitude, and the AC current outputted by the power supply filter circuit is input into the rectifier bridge for full-bridge rectification to become a pulsating DC current, and the pulsating DC current is filtered by the electrolytic capacitor C5. It becomes a smoother DC input to the high frequency conversion circuit.
图2中的高频转换电路为自激式半桥高频转换电路，上述的DC经过R2输入到C6，对C6进行充电，当C6两端电压上升到一定数值时，双向触发二极管DB3放电，此时三极管Q2、Q1轮流导通，振荡变压器T3输出高频到C8，并由C8输入到灯电流扼流电路T4的高频绕组线圈N1中。The high frequency conversion circuit in FIG. 2 is a self-excited half-bridge high frequency conversion circuit. The above DC is input to C6 through R2 to charge C6. When the voltage across C6 rises to a certain value, the bidirectional trigger diode DB3 is discharged. At this time, the transistors Q2 and Q1 are turned on in turn, and the oscillating transformer T3 outputs a high frequency to C8, and is input from C8 to the high frequency winding coil N1 of the lamp current choke circuit T4.
灯电流扼流电路由高频扼流电感T5、T4构成，其中T4包括高频绕组线圈N1和低频绕组线圈N2，且高频绕组线圈N1和低频绕组线圈N2磁耦合在一起，而低频绕组线圈N2与高频扼流电感T5串于电源回路中，C3为高滤波电容，以防止高频返回电网。The lamp current choke circuit is composed of high frequency choke inductors T5, T4, wherein T4 includes a high frequency winding coil N1 and a low frequency winding coil N2, and the high frequency winding coil N1 and the low frequency winding coil N2 are magnetically coupled together, and the low frequency winding coil N2 and high-frequency choke inductor T5 are in the power supply loop, and C3 is a high-filter capacitor to prevent high-frequency return to the grid.
T3为振荡变压器，该振荡变压器的N1输出的高频电流经C8、T4、N1送至谐振电容C9，因HID灯并接C9两端，T4高频绕组线圈N1与C9谐振即可产生3-4KV高压启动HID灯。T3 is an oscillating transformer. The high-frequency current of the N1 output of the oscillating transformer is sent to the resonant capacitor C9 via C8, T4, and N1. Since the HID lamp is connected to both ends of C9, the T4 high-frequency winding coils N1 and C9 resonate to generate 3- 4KV high voltage start HID lamp.
另外50-60HZ的工频电流经过T4的低频绕组线圈N2，同时会将低频偶合到高频绕组线圈N1的回路中，经过高频绕组线圈N1的高频电流也会耦合到低频绕组线圈N2中，为防止高频电流反馈到电网中，通过高频扼流电感T5可将其高频电流阻断。In addition, the 50-60HZ power frequency current passes through the low frequency winding coil N2 of T4, and the low frequency is coupled to the loop of the high frequency winding coil N1. The high frequency current passing through the high frequency winding coil N1 is also coupled to the low frequency winding coil N2. In order to prevent the high frequency current from being fed back into the grid, the high frequency current can be blocked by the high frequency choke inductor T5.
本发明中的电源滤波电路、整流滤波电路、高频转换电路、HID灯负载及异常保护电路等均为公知电路，其均可与本发明中的灯电流扼流电路进行任意组合，均可实现本发明的技术效果。The power supply filter circuit, the rectification filter circuit, the high frequency conversion circuit, the HID lamp load and the abnormality protection circuit in the present invention are all known circuits, and can be combined with the lamp current choke circuit of the present invention in any combination, and can be realized. The technical effect of the present invention.
以上是对本发明所提供的一种工频调制式高频HID电子镇流器进行了详细的介绍，本文中应用了具体个例对本发明的结构原理及实施方式进行了阐述，以上实施例只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。The above is a detailed description of a power frequency modulation type high frequency HID electronic ballast provided by the present invention. The structural principle and implementation manner of the present invention are described in the specific examples, and the above embodiments are only used. To help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in specific embodiments and application scopes. The content should not be construed as limiting the invention.

Claims (10)

  1. 1、一种工频调制式高频HID电子镇流器，主要包括有电源滤波电路、整流滤波电路、高频转换电路和HID灯负载，所述电源滤波电路一端与电源输入端连接，另一端通过整流滤波电路与高频转换电路连接，高频转换电路与HID灯负载连接，其特征在于：所述高频转换电路与HID灯负载之间还连接有一电感扼流电路，所述电源滤波电路上还连接有一工频调制控制电路，所述工频调制控制电路与电感扼流电路连接；所述电源滤波电路对由电源输入端输入的交流电流进行滤波处理，并分两路输出频率为50-60HZ的交流电流，一路频率为50-60HZ的交流输入到整流滤波电路，由整流滤波电路进行整流滤波处理后输出直流电流到高频转换电路，该直流电流经过高频转换电路进行高频转换后输出高频电流到电感扼流电路；另一路频率为50-60HZ的交流电流输入到工频调制控制电路，经过工频调制控制电路进行工频调制后输出频率为50-60HZ的工频电流到电感扼流电路；所述电感扼流电路对上述来自高频转换电路的高频电流和来自工频调制控制电路频率为50-60HZ的工频电流进行电流叠加及磁场耦合处理，并输出到HID灯负载，由上述高频电流对HID灯负载进行触发点亮，由频率为50-60HZ的工频电流对HID灯负载进行调制控制。1. A power frequency modulation type high frequency HID electronic ballast mainly comprises a power supply filter circuit, a rectification and filtering circuit, a high frequency conversion circuit and a HID lamp load, wherein one end of the power supply filter circuit is connected to the power input end, and the other end is connected The high-frequency conversion circuit is connected to the high-frequency conversion circuit, and the high-frequency conversion circuit is connected to the HID lamp load. The high-frequency conversion circuit and the HID lamp load are further connected with an inductor choke circuit, and the power supply filter circuit is connected. A power frequency modulation control circuit is further connected, and the power frequency modulation control circuit is connected with the inductor choke circuit; the power supply filter circuit performs filtering processing on the alternating current input by the power input end, and divides the output frequency of the two channels into 50 -60HZ AC current, one frequency is 50-60HZ AC input to the rectification filter circuit, the rectifier filter circuit performs rectification and filtering processing, and then outputs DC current to the high frequency conversion circuit, the DC current is converted by high frequency conversion circuit for high frequency conversion After outputting high-frequency current to the inductor choke circuit; another AC current with a frequency of 50-60HZ is input to the power frequency modulation control circuit After the power frequency modulation control circuit performs the power frequency modulation, the output frequency frequency is 50-60HZ to the inductor choke circuit; the inductor choke circuit applies the high frequency current from the high frequency conversion circuit and the power frequency modulation The power frequency current of the control circuit frequency is 50-60HZ for current superposition and magnetic field coupling processing, and is output to the HID lamp load, and the high-frequency current is triggered to illuminate the HID lamp load, and the power frequency current is 50-60HZ. Modulation control of the HID lamp load.
  2. 根据权利要求1所述的工频调制式高频HID电子镇流器，其特征在于所述电感扼流电路中包括有一高频绕组线圈和一低频绕组线圈，所述电感扼流电路通过低频绕组线圈与工频调制控制电路连接，所述高频绕组线圈与低频绕组线圈磁耦合一起。The power frequency modulation type high frequency HID electronic ballast according to claim 1, wherein said inductor choke circuit comprises a high frequency winding coil and a low frequency winding coil, and said inductor choke circuit passes through the low frequency winding. The coil is coupled to a power frequency modulation control circuit that is magnetically coupled to the low frequency winding coil.
  3. 根据权利要求2所述的工频调制式高频HID电子镇流器，其特征在于所述电感扼流电路用于对所述高频绕组线圈与低频绕组线圈进行高低频、高低压隔离处理。The power frequency modulation type high frequency HID electronic ballast according to claim 2, wherein the inductor choke circuit is configured to perform high and low frequency, high and low voltage isolation processing on the high frequency winding coil and the low frequency winding coil.
  4. 根据权利要求2所述的工频调制式高频HID电子镇流器，其特征在于所述电感扼流电路根据HID灯负载的功率大小对来自高频转换电路的高频电流进行限流处理。The power frequency modulation type high frequency HID electronic ballast according to claim 2, wherein the inductance choke circuit current-limits the high-frequency current from the high-frequency conversion circuit according to the power level of the HID lamp load.
  5. 根据权利要求1所述的工频调制式高频HID电子镇流器，其特征在于所述高频转换电路为半桥高频转换电路。The power frequency modulation type high frequency HID electronic ballast according to claim 1, wherein said high frequency conversion circuit is a half bridge high frequency conversion circuit.
  6. 根据权利要求1所述的工频调制式高频HID电子镇流器，其特征在于所述高频转换电路为全桥高频转换电路。The power frequency modulation type high frequency HID electronic ballast according to claim 1, wherein said high frequency conversion circuit is a full bridge high frequency conversion circuit.
  7. 根据权利要求1所述的工频调制式高频HID电子镇流器，其特征在于所述高频转换电路为自激式高频转换电路。The power frequency modulation type high frequency HID electronic ballast according to claim 1, wherein said high frequency conversion circuit is a self-excited high frequency conversion circuit.
  8. 根据权利要求1所述的工频调制式高频HID电子镇流器，其特征在于所述高频转换电路为它激式高频转换电路。The power frequency modulation type high frequency HID electronic ballast according to claim 1, wherein said high frequency conversion circuit is an excitation type high frequency conversion circuit.
  9. 根据权利要求1所述的工频调制式高频HID电子镇流器，其特征在于所述整流滤波电路和高频转换电路之间还连接有一有源功率因数校正电路，通过该有源功率因数校正电路可将功率因可提高到99%以上。The power frequency modulation type high frequency HID electronic ballast according to claim 1, wherein an active power factor correction circuit is further connected between the rectification filter circuit and the high frequency conversion circuit, and the active power factor is passed. The correction circuit can increase the power factor by more than 99%.
  10. 根据权利要求1所述的工频调制式高频HID电子镇流器，其特征在于还包括有一异常保护电路，该异常保护电路与整流滤波电路、高频转换电路和HID灯负载连接。The power frequency modulation type high frequency HID electronic ballast according to claim 1, further comprising an abnormality protection circuit connected to the rectification filter circuit, the high frequency conversion circuit and the HID lamp load.
PCT/CN2011/084608 2011-03-09 2011-12-26 Power frequency modulation high frequency hid electronic ballast WO2012119473A1 (en)

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CN201110056382.6A CN102685997B (en) 2011-03-09 2011-03-09 High-frequency HID (High Intensity Discharge) electronic ballast with modulated power frequency
CN201110056382.6 2011-03-09

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