電流連續型三相PFC

摘要：　　指出并分析了三相PFC，研究不盡人意的根本原因，為三相電路間的工作狀態的相互制約。提出一種各相可獨立控制電路連續型三相PFC的主電路拓撲，通過電路的等效變換和深化，分析了電路原理及控制方式，使PF>0.99，THD<5%。 敘詞：PF THD Abstract：　　Three-phase PFC is put forward and analyzed, and the real reason of making people dissatisfy researched, which is the restriction among three phases’ circuits, in this paper. And what’s more, the main circuit topology controlled with continuous current type, the circuit principium and the controlling mode are pointed out though the equivalent transform and deepening to the circuit are illustrated in the paper. Keyword：PF THD