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.
出处
《电气传动》
北大核心
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
关键词
PWM逆变器
电磁干扰
软开关
线阻抗稳定网络
PWM inverter
electromagnetic interference（EMI）
soft switching
line impedance stabilization network（LISN）
