应用直接功率传递原理改进的单级PFC拓扑及其直流母线电压应力分析  

Several Schemes of Alleviating BusVoltage Stress in Single Stage PowerFactor Correction Converters withDirect Power Transfer

作　　者：刘小光[1] 尹华杰[1] 

机构地区：[1]华南理工大学电力学院,510640

出　　处：《电气应用》2005年第1期68-72,共5页Electrotechnical Application

摘　　要：过高的直流母线电压应力(即中间储能电容电压应力)是困扰单级功率因数校正AC／DC变换器的一个严重问题。本文分析了单级功率校正AC／DC变换器产生高电容电压应力的原因,介绍了三种典型的根据直接功率传递原理改进的单级PFC变换器拓扑,对这几个拓扑的直流母线电压应力进行了深入的分析和比较。High DC bus voltage stress is an important issue for single stage PFC converters in practical application. This paper analyzes the inherent reason of high bus voltage stress of single stage power factor correction AC/DC converters. The concept of direct power transfer is introduced to solve this problem and three possible resolving schemes are analyzed and discussed, and some of the practical implementation circuits topologies are also given. The performance comparison of the three schemes is given in the end.

关 键 词：单级PFC变换器 直接功率传递原理 AC/DC变换器 直流母线 电压应力分析 

分 类 号：TM464[电气工程—电器]