PWM电机驱动系统传导干扰机理分析

For the actual motor system, analyze the whole motor system including AC power, rectifier part, inverter part and motor. In order to facilitate the analysis and study, the conducted interference is divided into CM interference part and DM interference part. Analyze the main CM and DM interference channel of PWM motor drive system. Because There is a relationship between the loop of conducted interference and turn-on and turn-off of the up and down bridge arm IGBTs, analyze the loop of CM interference and DM interference as the state of IGBT. The three different simulations result of the unanimous conclusion that the mechanism analysis of the paper is correct.