大容量晶闸管变频调速系统 脉动转矩抑制方法研究

摘要

A new method of Weakening pulse Torpue of high power thyristorCSI variable speed system is presented in this paper. The system consists of two thyristor CSI inverter and a AC motor which has two sets of three phase winding with phase difference 30°. The air gap magnetic force is analyzed. The results proved that the pulse torque is weakened greatly and the performance of the system is improved.%介绍了一种大容量晶闸管电流型变频调速系统脉动转矩抑制的新方法，分析了六段供电方式下双定子绕组异步电机的气隙磁场，分析结果表明该方法能消除5次、7次谐波电流产生的脉动转矩以及基波电流产生的空间5次、7次谐波磁场对电机运行的影响。