基于UC3854有源功率因数校正电路的设计

Design of Active Power Factor Correction Circuit Based on UC3854 Controller

由于电力电子装置中的相控整流和不可控二极管整流使输入电流波形发生严重畸变,不但大大降低了系统的功率因数,还引起了严重的谐波污染。介绍了有源功率因数校正电路的工作原理,提出了基于UC3854芯片的一种有源功率因数校正电路方案。经PSpice软件仿真证明电路合理可行。

Because input current waveforrn serious distortion of the phased rectifier and non-controllable diode rectifier in power elec- tronic devices, it not only greatly reduces system power factor, but also raises serious harmonic pollution. This paper introduces the active power factor correction circuit principle and proposes an active power factor correction circuit based on UC3854 controller. The PSpice simulation results show that the designed circuit is reasonable and feasible.