直流脉宽数字调速系统中电磁干扰的解决方法
The Methods of solving EMI In DC Motor Digital Driver System Using PWM Technique
摘 要 电磁干扰一直是直流脉宽调速系统中一个很严重的问题,尤其是电力电子器件在开通和关断时刻
产生的干扰,它不仅影响系统的控制性能,而且关系到器件能否安全工作,文章分析了直流脉宽数字调速
系统中电磁干扰产生的原因,并提出了相应的解决方法;同时通过实验验证了这些方法的有效性。
关键词 脉宽调制 电磁干扰 快恢复二极管
Abstract EMI is a very serious problem in the DC motor driver system using PWM
technique,especially the interference that is produce at the moment of power electronic
devices’ opening and shutting off, it not only influences control performance of the
system,but also involves whether the device could work safely This paper analyzes the
reason of EMI in PWM DC motor drive,and put forward the solutions; meanwhile proves
the validity of these approaches.
Keywords PWM EMI Fast Recovery Diode