六相逆变器空间矢量脉宽调制策略的分析与优化  

Analysis and optimization of SVPWM strategy for a six-phase inverter

作　　者：付胜杰[1] 彭侠夫[1] 

机构地区：[1]厦门大学信息科学与技术学院,福建厦门361005

出　　处：《哈尔滨工程大学学报》2012年第4期512-516,共5页Journal of Harbin Engineering University

基　　金：国家985工程建设基金资助项目(0630X13400)

摘　　要：为提高六相电压源逆变器的稳定性,最大限度地降低系统功率损耗,通过分析六相电压源逆变器相邻四矢量控制策略,并结合其本身所具有的开关特性,合理利用不同类型的零电压矢量,并调整其在一个开关周期中的作用时间,以达到改善功率器件开关模式的目的,从而优化了六相电压源逆变器空间矢量脉宽调制(SVPWM)策略.仿真结果表明,传统的电压矢量调制方式相比,该方法在不同调制深度下具有理想的谐波特性,同时可以有效地降低逆变器开关损耗.In order to improve the stability and reduce system power loss of a six-phase voltage source inverter,the adjacent four vectors control strategy was analyzed,as well as its own switching characteristics,so as to use different types of zero-voltage vector rationally and adjust the acting time in one switching cycle.By this means,the switching mode of a power device was improved,thereby optimizing the space vector pulse width modulation（SVPWM） strategy of the six-phase voltage source inverter.The simulation results show that compared with the conventional voltage vector modulation mode,the proposed method has ideal harmonic characteristics under different modulation depths,and at the same time,it can effectively reduce the inverter switching losses.

关 键 词：六相电压源逆变器 空间矢量脉宽调制 零矢量 谐波畸变率 开关损耗 

分 类 号：TM464[电气工程—电器]