摘要
提出了一种改进型的三相PWM整流器拓扑,该整流器采用了预测电流型的空间电压矢量脉宽调制技术,实现了可控软启动,提高了功率因数,并拓宽了电压调节范围。设计了新型过流保护电路,响应速度快,并且支持高压电源系统反复启动。进行了仿真与实验验证。测试结果表明:改进型PWM整流器能够实现可控软启动,稳态误差小于2%;负载突变时,稳态恢复时间小于0.5 s;功率因数大于95%。
This paper presents an improved three-phase PWM rectifier with predicted current space voltage-vector pulse width modulation technology. The designed rectifier can realize controllable soft start, and has high power factor and wide voltage regulation. A new over current protection circuit is designed, which has fast response speed and can meet repetitive start requirement of high voltage supply application. Simulation and test results show that the improved PWM rectifier can achieve controllable soft start and the error in steady state is less than 2 %, the recovery time is less than 0. 5 s after a sudden change of the load, the power factor is more than 95 %.
作者
杨晓光
高灵虎
徐林亮
刘伟民
金双双
Yang Xiaoguang;Cao Linghu;Xu Linliang;Liu Weimin;Jin Shuangshuang(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin,300130,China)
出处
《电子技术应用》
2018年第8期134-137,142,共5页
Application of Electronic Technique
