抑制电流畸变的Vienna整流器修正调制策略  

A Modified Modulation Strategy in Vienna Rectifier for Current Distortion Reduction

作　　者：冯婧 何凤有 FENG Jing;HE Feng-you(China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学,电气与动力工程学院,江苏徐州221116

出　　处：《电力电子技术》2020年第12期71-75,80,共6页Power Electronics

基　　金：国家重点研发计划(2016YFC0600906)。

摘　　要：Vienna整流器的空间矢量调制策略在相电流与参考电压极性相反的区域会产生输出畸变,降低输出电流品质。在此从矢量合成的角度分析了Vienna整流器调制异常区域的成因,并根据基本电压矢量受到影响的特点将异常区域分为两类,进而提出了使两类异常区域内输出误差最小化的修正调制策略,并讨论了基于矢量合成的修正调制策略的载波实现方法,使得实现过程得以简化。最后,在此通过实验验证了所提修正调制策略的有效性。The input currents of Vienna rectifier with space vector modulation are distorted in the region where the polarity of phase current is opposite to that of reference voltage.The cause of the abnormal region is analyzed through vector synthesis and the abnormal region is divided into two types according to the affected basic voltage vector.Then,one modified modulation strategy is proposed to minimize the output errors in the two kinds of abnormal regions.Moreover,the carrier-based implementation of the modified modulation strategy is realized,which simplifies the implementation process.Finally,the effectiveness of the proposed modified modulation strategy is verified by experiment.

关 键 词：整流器 修正调制策略 空间矢量调制 

分 类 号：TM461[电气工程—电器]