基于单周控制的三相PFC的仿真研究

Simulation Research on Three-Phase PFC Based on One-Cycle-Control

介绍了一种CCM模式下的三相PFC电路,并采用单周控制实现了三相整流器的功率因数校正。单周控制电路的结构十分简单,核心器件仅由一可复位积分器、一比较器和一RS触发器组成,不需要乘法器,从而简化了系统,具有反应快、开关频率恒定、控制方法简单等优点。仿真结果验证了理论分析的正确性。

A kind of three-phase PFC circuit wok in CCM mode is introduced. One-cycle-control is applied to achieve unity power factor in three-phase rectifier. This one-cycle control circuit is simple. The core device consists of only one integrator which can be reset, a comparator and a RS flip-flops without any multiplier. This control circuit has advantages of fast response, constant frequency, simple control and so on. Simulation result validates the theoretic analysis finally.