基于电力电子开关的整流电路谐波滤除法研究  

Research on Harmonic Reduction of Rectifier based on Electric Power Switches

作　　者：孙婉胜[1] 张海梁[1] 

机构地区：[1]武汉大学,湖北武汉430072

出　　处：《电力电子技术》2005年第4期11-13,共3页Power Electronics

摘　　要：针对整流电路的谐波污染,采用了一种基于电力电子开关的可控整流电路谐波注入滤波法。该方法直接从整流电路的直流侧提取所需的谐波电流,在利用适当的电路结构获得最佳注入条件后,通过电力电子开关注入到交流侧。它不仅降低了谐波含量,同时也减少了直流侧电容桥上的谐振电流。通过仿真和电路试验证明,该滤波电路能将电流畸变率由原来的30.53%降低到9.45%,从而使交流侧的电流接近正弦波。因此,它是一种很有前景的滤波方法。To solve the harmonic pollution of the three-phase controlled rectifiers,the authors adopted a filtering method of by means har-monic current injection based on the electric power switches,It derives the required harmonic current from DC side of the rectifier directly,after acquiring the optimal injection condition through proper circuit structure,the harmonic is put into AC side by electric power switches,It can reduce the resonance current of the capacitors bridge in DC side while making the content of harmonic lower.Both the computer simulation and model experiment prove that it can reduce the total har-monic distortion of the harmonic current from 30.53% to 9,45% and make the waveform approach to sine wave.Thus it is a prospering filter circuit.

关 键 词：电力电了开关 整流电路 谐波 滤波电路 

分 类 号：TM461[电气工程—电器]