三相Z源并网逆变器的换相过程分析  

Commutation analysis of three-phase Z-source inverter

作　　者：李杰[1] 屈克庆[2] 李战伟[1] 

机构地区：[1]上海开放大学信息与工程学院,上海200433 [2]上海电力学院电力与自动化工程学院,上海200090

出　　处：《电工电能新技术》2014年第6期30-35,共6页Advanced Technology of Electrical Engineering and Energy

基　　金：上海市教育委员会科研创新项目资助(编号11YZ257)

摘　　要：三相Z源并网逆变器有9个开关状态,电流换向过程相对复杂,对其换相过程的深入分析和了解有利于逆变器主回路的合理设计以及效率的提高。本文根据逆变桥上IGBT和缓冲电路的特性,通过例图定性分析了三相Z源并网逆变器的换相过程。并通过一套带三相Z源并网逆变器的永磁同步机风力发电系统上的实验证实了上述分析的正确性。The three-phase Z-source inverter has 9 switching states,so its commutation is complicated relatively. In this paper,according to the properties of IGBT and snubber circuit in the phase leg,commutation process of the three-phase Z-source inverter is analyzed in detail by illustrations. The results of experiment on the Permanent Magnet Synchronous Generator（ PMSG） wind generation system based on three-phase Z-source inverter verify the correctness of the analysis.

关 键 词：三相Z源并网逆变器 换相过程分析 缓冲电路 

分 类 号：TM614[电气工程—电力系统及自动化]