PWM变频调速电机轴承电磁损伤的机理研究  

Investigation on Motor Bearing Electromagnetism Damage Induced by PWM Inverters

作　　者：王世怀[1] 熊万里[2] 段志善[1] 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]湖南大学,湖南长沙410082

出　　处：《电力科学与工程》2004年第3期5-8,共4页Electric Power Science and Engineering

基　　金：国家自然科学基金资助项目(No 50205008)

摘　　要：介绍了电机轴承电磁损伤的几种形式,重点研究了脉宽调制(PWM)变频调速电机轴承电磁损伤的机理,给出了电机定子绕组中性点电压和轴电压的测量结果,建立了PWM变频调速系统的物理模型,并对轴电压和轴承电流进行了计算机仿真,仿真结果与测量结果相吻合。This paper investigates the different forms of bearing electromagnetism damages. The bearing electromagnetism damage problem induced by Pulse-Width Modulation (PWM) inverter is discussed. The signals of stator to ground voltage and rotor to ground voltage are obtained via experiment. A model of PWM inverter-fed system is established. The simulation results agree with the experiments.

关 键 词：脉宽调制 电动机 轴电压 轴承电流 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]