车用电机控制器共模电流分析及其抑制

Analysis and Suppression of Common-mode Current for Vehicle Motor Controller

电机控制器中存在的共模电流会对系统的EMC产生不良影响。本文通过理论分析得到共模电流所流经网络的等效电路图及各个参数对共模电流的影响。通过仿真分析,进行验证并提出抑制共模电流的有关建议。

The common-mode current existed in the motor controller has a bad effect on the EMC of the system.This paper obtains the equivalent circuit diagram of the common-mode current flowing through the network and the influence of each parameter on the common-mode current by theoretical analysis.Through the simulation analysis,the validation is done,and some suggestions are put forward to suppress the common-mode current.