降低电机逆变系统电磁污染的软开关技术研究  

Study on Soft-switching Technology to Reduce the Electromagnetic Pollution of Motor Inverter System

作　　者：杨迎化[1,2] 谢顺依[1] 高洪林[2] 王新华[2] 陈晔[3] 

机构地区：[1]海军工程大学兵器工程系,湖北武汉430033 [2]海军潜艇学院导弹兵器系,山东青岛266071 [3]海军航空工程学院青岛分院,山东青岛266041

出　　处：《电气传动》2009年第1期56-58,共3页Electric Drive

基　　金：国防“十一五”重点攻关项目

摘　　要：分析了传统的硬开关PWM逆变传动系统中传导电磁干扰的产生源和传播路径。为了减少传导电磁干扰,应用一种新型的直流环节并联谐振软开关逆变器,阐述了软开关逆变器的工作原理及其特点。采用线阻抗稳定网络,分别在硬开关和软开关的条件下,对一台60 kW的IGBT交流逆变系统的EMI传导噪声进行了测量,并对硬开关和软开关逆变器的EMI噪声频谱进行了对比。The source and path of conducted electromagnetic interference （EMI） in the traditional hard- switching PWM inverter drive system was analyzed. To reduce the conducted EMI, a novel parallel resonant DC link inverter（PRDCLI）was applied, and its work principle and characteristics was expounded. Using line impedance stabilization network （LISN）, the EMI conducted noise of a 60 kW IGBT-based inverter system was measured under conditions of hard-switching and soft-switching respectively,and compared the EMI conducted noise spectral between hard-switching inverter and soft-switching inverter.

关 键 词：PWM逆变器 电磁干扰 软开关 线阻抗稳定网络 

分 类 号：TM464[电气工程—电器]