直流电机换向有限元仿真模型的研究  

Analysis of the Commutation in Small DC Motors Using Finite Element Method

作　　者：崔淑梅[1] 陈钊[1] 宋立伟[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001

出　　处：《微电机》2011年第2期1-5,共5页Micromotors

摘　　要：电刷换向是直流电机的特有现象,换向将引起电弧火花、换向噪声、电磁干扰等诸多问题。由于换向过程非常复杂,目前的解析数学计算难以准确计算换向电流。该文采用一种由开关元件构成的电路模拟直流电机的换向过程,在有限元软件Ansoft Maxwell对直流电机进行仿真分析,从而获得传统解析计算难以计算的换向数据,提供了一种简单快捷的预测换向电流的方法。换向电流的解决,也给解决换向相关问题指出了一条捷径。Brush commutation is a special phenomenon of brushes-DC motor which will cause the spark,noise,electromagnetic-interference,and many other problems.Currently the mathematical calculation is very complex and difficult to gain an exact calculation result for the commutation current.This paper utilized a commutation-circuit by the switching element composition to simulate the real commutation process.Then the finite element software Ansoft Maxwell was used to simulate the brushes-DC motor to get the commutation of data.This simulation provides a simple and quick forecast for the coil＇s current.The solution of the commutation current means a shortcut to the solutions for the problem to the relevant.

关 键 词：电刷 直流电机 换向电流 有限元模型 

分 类 号：TM301.3[电气工程—电机] TM381