单向开关前置的单相PFC电路仿真研究

Study on the Single-phase PFC Circuit With the Front Single-way Switch Based on Matlab/Simulation

引入一种单向开关前置的单相PFC电路拓扑，把单向开关放置在整流桥前端，较好的解决了传统单相升压PFC变换器电路后置的升压电感直流偏磁问题。文中介绍该电路的结构，分析研究电路的各种工作状态，最后利用Matlab软件对该变换器电路进行了仿真研究。

A single-phase power-factor-correction circuit topology with front single-way switch was introduced in this paper.The single-way switch was placed before the rectifier,which resolved the problem of boost inductor＇s DC magnetic bias in the traditional single-phase boost PFC converter.We introduced the circuit structure,analysed several working conditions of this circuit,and finally simulated the converter circuit by Matlab.