It derives the required harmonic cur rent from DC side of the rectifier directly,after acquiring the optimal injecti on condition through proper circuit structure,the harmonic is put into AC side by electric power switches.

• 该方法直接从整流电路的直流侧提取所需的谐波电流,在利用适当的电路结构获得最佳注入条件后,通过电力电子开关注入到交流侧。