一种新型交流调压电路的研究与设计  

Research and Design on New AC Voltage Regulation Circuit

作　　者：张博[1] 

机构地区：[1]河海大学能源与电气学院,南京211100

出　　处：《微处理机》2016年第3期56-59,63,共5页Microprocessors

基　　金：河海大学国家级大学生创新训练计划资助项目(201510294034);2015年江苏省重点研发计划--产业前瞻与共性关键技术(BE2015198);2015年江苏省政策引导类计划(产学研合作)-前瞻性联合研究项目(BY2015030-01)

摘　　要：为了对交流用电设备的电压进行调节,实现降压控制,目前普遍采用可控硅相控调压装置、自耦降压式调控装置和采用IGBT脉宽调制降压。根据功率放大器交流信号放大时在过零点存在交越失真现象的启发,提出一种新型的降压方法,即变过零点斩波降压,该种方法通过对输入的正弦波电压进行半周期对称斩波,改变电压过零点,控制开关的导通角来实现输出电压的有效值降低,达到降压目的。通过仿真及实际电路测试,该种调压电路输出波形镜像对称,高次谐波含量小,对节能灯具降压控制时不会产生频闪等现象。In order to adjust the voltage of AC（ Altennating current） electrical appliances for voltage reduction,thyristor phased regulating device,auto coupling voltage reduction device and IGBT PWM voltage reduction are widely used. According to the inspiration from the crossover distortion of passing zero points with the AC signal amplification of power amplifier,this paper proposes a new AC voltage regulation circuit,i. e. crossing zero chopper voltage reduction. This method changes the voltage zero point by chopping half cycle symmetry to the sine wave of input voltage and reduces the effective value of the output voltage by controlling conduction angle of switch to achieve voltage reduction. The simulation and test results show that the output waveform of the voltage circuit is mirror symmetry,the higher harmonic content is small,and there is no frequent flash during step- down control to energy saving lamps.

关 键 词：交流 调压电路 过零点 降压节电 相控调压 仿真 

分 类 号：TM910.1[电气工程—电力电子与电力传动] TP3[自动化与计算机技术—计算机科学与技术]