PWM逆变器共模电磁干扰源及抑制技术探究  

Research on Origin and Suppression of Common Mode EMI in PWM Inverter

作　　者：蒋保涛[1] 游家发[1] 朱小祥[1] 

机构地区：[1]武汉软件工程职业学院,湖北武汉430205

出　　处：《电力电子技术》2011年第11期73-74,98,共3页Power Electronics

摘　　要：在PWM逆变器系统中,IGBT的高速开关动作会产生很高的du/dt,di/dt,导致产生严重的电磁干扰(EMI)。此处系统阐述了PWM逆变器的各种寄生参数对共模EMI产生的影响,通过对3种有效共模EMI抑制技术典型方案的详细介绍,揭示出各种技术的优缺点,为工程实践抑制共模EMI提供了指导性建议。In PWM inverter system, the high du/dt and di/dt due to the fast switching of IGBT can bring serious electro-magnetic interference （EMI） issues.The paper systematically elaborates the influence of all kinds of parasitic parameters in common mode electromagnetic interference （CM EMI） by introducing the research results from domestic and international documents.It reveales the advantage and disadvantage among the three kinds of technology through a detailed description of the three typical schemes on suppression of CM EMI in PWM inverter.Some suggests are pro- posed for engineering practice on suppression of CM EMI in PWM inverter.

关 键 词：逆变器 共模电磁干扰 抑制技术 

分 类 号：TM464[电气工程—电器]