基于Sepic的功率因数校正电路的分析和仿真  

Analysis and Simulation of a Sepic-based Power Factor Correction Circuit

作　　者：谭才兴 岳雨霏 汤赐[1] Tan Caixing;Yue Yufei;Tang Ci(School of Electrical and Information Engineering,Changsha University of Sicence and Technology,Changsha,Hunan,China,410114)

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410114

出　　处：《仪器仪表用户》2024年第8期47-49,52,共4页Instrumentation

基　　金：2024年湖南省自然科学基金项目《面向超深矿井提升机的MMC极低频谐波振荡机理及抑制方法研究》(2024JJ5016);2023年长沙市软科学研究计划项目《电气化高速铁路功率调节器的损耗建模与优化方法研究》(kh2302011)

摘　　要：Sepic-PFC电路以其高效率,宽输入输出电压,输出电压脉动小等优点被广泛用于工业功率因数校正。本文分析传统Sepic-PFC电路的工作模式,总结了其优缺点。针对传统电路开关器件电压应力大的缺点,介绍了改进的SepicPFC电路,并给出了相关的理论分析和公式推导。最后利用Simulink搭建仿真模型,对比分析仿真结果验证了改进的Sepic-PFC电路开关器件的低电压应力和其良好的功率因数校正功能。The Sepic-PFC circuit is widely used in industrial power factor correction due to its advantages such as high efficiency,wide input and output voltage range,and small output voltage ripple.This article analyzes the operating modes of the traditional Sepic-PFC circuit and summarizes its advantages and disadvantages.Aiming at the shortcoming of high voltage stress on the switching devices in the traditional circuit,an improved Sepic-PFC circuit is introduced,and relevant theoretical analysis and formula derivation are provided.Finally,a simulation model is built using Simulink software,and the simulation results are compared to verify the low voltage stress of the switching devices and the excellent power factor correction function of the improved Sepic-PFC circuit.

关 键 词：功率因数校正 Sepic电路 电压应力 

分 类 号：TM46[电气工程—电器]