滤波电感式PFC电路的研究与仿真

Research and Simulation on Filter Inductance PFC Circuit

在介绍功率因数概念的基础上,指出了提高功率因数的意义,研究了滤波电感式PFC电路的工作原理,并利用Multisim软件对其进行了仿真和分析。结果表明:桥式整流电路添加滤波电感式无源PFC后,整流二级管的导通角变大,大大降低了输入电流的失真,使纹波电压变得更小。

Based on the introduction to power factor concept, this paper pointed out the meaning of raising power factor, studied the working principle of inductance type PFC circuit, simulated and analysed the circuit using Multisim software. It finally drew the conclusion that after being added to a filter inductance PFC circuit, the rectifier diode conduction angle of the bridge rectifier circuit was greatened, the input current distortion was greatly reduced and thus the ripple voltage further diminished.