并联型双耦合绕组反激式单级PFC变换器  

A Parallel Single-Stage Boost-Flyback PFC Converter

作　　者：文毅[1] 赵清林[1] 邬伟扬[1] 

机构地区：[1]燕山大学电气工程学院,秦皇岛066004

出　　处：《电工技术学报》2007年第12期116-121,共6页Transactions of China Electrotechnical Society

摘　　要：在双耦合绕组反激式单级PFC变换拓扑的基础上,引入并联功率传递单元,提出一种并联型双耦合绕组反激式单级PFC变换拓扑。该拓扑通过在Boost电感上增加二次绕组,使部分能量直接由Boost电感传给负载,从而提高了变换器的效率,并且能够限制中间储能电容电压和减小开关器件的电压电流应力。本文详细分析了该变换拓扑的工作原理和稳态特性,讨论了变换器的参数设计。150W/24V样机实验结果表明该拓扑具有高效率、高功率因数、低开关电压应力等特点。Based on the single-stage Boost-flyback PFC converter, a parallel single-stage Boost-flyback PFC converter is proposed in this paper. By adding a secondary winding to the Boost inductor, this topology will directly transfer some input energy to the load via Boost inductor, so it can achieve high efficiency, limit the voltage across intermediate capacitors and reduce the voltage and current stresses on power components. Operation principle, steady-state and practical design consideration are discussed in detail. The experimental results of a 150W/24V prototype indicate that this converter can obtain high efficiency, high power factor and low switch voltage stress.

关 键 词：功率因数校正 单级变换器 双耦合绕组 不连续导电模式 

分 类 号：TM464[电气工程—电器]