五相三电平逆变器空间矢量PWM控制研究  

Research on Space Vector PWM of Five-Phase Three-Level Inverter

作　　者：宋庆国[1] 张晓锋[1] 于飞[1] 张成胜[1] 

机构地区：[1]海军工程大学电气工程系,武汉430033

出　　处：《武汉理工大学学报（交通科学与工程版）》2006年第5期796-799,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国防"十.五"预研项目资助(批准号:101050601)

摘　　要：针对五相永磁同步电动机,构建了三电平逆变器供电的变频调速系统,对五相三电平逆变器的空间矢量PWM控制算法进行了研究.对于多相多电平逆变器来说,随着相数与电平数的增加,电压矢量与开关状态数量迅速增加.因此,在采用空间矢量PWM时,首先要合理选择输出电压矢量,并能简单、快速计算出各控制周期中作用时间;其次对输出电压矢量进行优化,合理选择开关顺序,以减少开关损耗.文中在对五相三电平逆变器电压矢量的特点和规律进行深入分析的基础上,提出一种简单实用的电压空间矢量PWM控制算法,并通过仿真实验对该控制算法进行了验证.For five-phase permanent magnetism synchronous motor （PMSM）,the variable-frequency variable-speed system is set up supplied with three-level inverter. Space vector PWM control algorithm of five-phase three-level inverter is studied. For multi-phase multi-level inverter, the numbers of voltage vector and switching state grow rapidly with the increment of phase and level. Firstly, the output voltage vector should be chosen appropriately when the method of space vector PWM （SVPWM） is used, and then the actuation duration of each in a control cycle can be figured out simply and quickly. Secondly, the output voltage vector should be optimized and the switching sequence be selected properly to decrease switching loss. On the basis of profound analysis about characteristic and rule of fivephase three-level inverter＇s voltage vector, a simple and practical control algorithm of voltage space vector PWM is put forward, and it is proved by simulation experiment.

关 键 词：五相三电平逆变器 SVPWM 永磁同步电机 

分 类 号：TM464[电气工程—电器]