基于LabVIEW的变频器共模电磁干扰定性测量  

Converter common mode EMI qualitative measurement based on LabVIEW

作　　者：林火养[1] 

机构地区：[1]福建信息职业技术学院光电器件集成加工中心,福建福州350003

出　　处：《电子测试》2013年第11期60-64,共5页Electronic Test

摘　　要：本论文主要分析变频器在驱动电动机时的传导性电磁干扰,即变频器的PWM输出与交流电动机之间采用长导线来连接时所产生的过电压及震荡现象。该干扰一方面使电动机绕组间的绝缘性能恶化,从而对交流电机造成不良的影响和电磁干扰。本文采用LabVIEW软件构建了变频器的传导性电磁干扰测量系统,采用软件方式分离出变频器所产生的传导性电磁干扰的共模噪声。This paper mainly analyzes the frequency converter in the driving motor of the EMI, namely between inverter PWM output and AC motor with long wire the overvoltage and turbulence to connect. The interference on the insulation motor winding deterioration, resulting in adverse effects and electromagnetic interference of AC motor. This paper uses the LabVIEW software to build the conducted electromagnetic interference measurement system inverter, common mode noise of conducted electromagnetic interference isolated converter produced by software.

关 键 词：电磁干扰 共模噪声 感应电动机 LABVIEW 

分 类 号：TM921.51[电气工程—电力电子与电力传动]