摘要
针对变频电机出现的轴承损坏问题 ,研究了电机在高频PWM逆变器驱动下轴承失效机理和失效过程 。
Aiming at the bearing failure of the frequency-conversion motor, the bearing failure mechanism and failure process when the motor is fed by the high-frequency PWM inverter are investigated in this paper. It is discovered that the chief reasons of the bearing failure of the frequency-conversion motor are the shaft voltage and bearing currents aroused by the PWM pulses. Lastly, the simulation results of the shaft voltage and bearing currents are presented in this paper.
出处
《轴承》
北大核心
2002年第8期24-27,共4页
Bearing
基金
天津市自然科学基金资助项目 (0 136 0 2 711)
关键词
变频电机
轴承
失效机理分析
PWM
bearing currents
distributed parameters
