单相Boost APFC电路的设计与分析

Design and Analysis of Single Phase Boost Power Factor Correction Circuit

开关电源等电力电子设备内部存在的不可控整流电路很容易造成输入电流的畸变,将会导致谐波污染和用电安全等问题。本文针对这些问题,分析了Boost APFC电路的平均电流法控制原理,提供了电路设计参数计算。并通过simulink软件对设计电路进行仿真,结果表明该电路的功率因数达到0.996,总谐波失真低于2%,能够有效抑制电流谐波,符合国家标准。

The uncontrollable rectifier circuits in power electronic equipment such as switching power supplies can easily cause distortion of the input current,which will lead to problems such as harmonic pollution and electricity safety.This article analyzes the average current control principle of Boost APFC circuit,and provides circuit design parameter calculation.The design circuit is simulated by simulink software,and the results show that the power factor of the circuit reaches 0.996,and the total harmonic distortion is less than 2%,which can effectively suppress the current harmonics and meet the national standards.