一种低输出电压纹波反激PFC变换器  

A Flyback PFC Converter With Low Output Voltage Ripple

作　　者：陈利[1] 许建平[1] 曾怡达[1] 阎铁生[1] 

机构地区：[1]磁浮技术与磁浮列车教育部重点实验室,西南交通大学,四川成都610031

出　　处：《电力电子技术》2014年第4期62-64,共3页Power Electronics

基　　金：国家自然科学基金(51177140);中央高校基本科研业务费专项资金(2682013ZT20)~~

摘　　要：为降低工作于电感电流断续导电模式(DCM)反激功率因数校正(PFC)变换器输出电压二倍工频纹波,提出了一种低输出电压纹波反激PFC变换器,它由一个具有快速动态响应特性的DCM Buck变换器和一个双输出绕组DCM反激PFC变换器组成。阐述了低输出电压纹波反激PFC变换器的基本原理,分析了变换器实现低输出电压纹波的条件,并通过实验验证了理论分析的正确性。实验结果表明,所提出的反激PFC变换器不但实现了低输出电压纹波,而且具有快速动态响应特性。In order to reduce the second-order line frequency output voltage ripple of operating in discontinuous con- duction mode（DCM） flyback power factor correction（PFC） converter,a flyback PFC converter with low output voltage ripple is proposed, which consists of a DCM Buck converter with fast dynamic response characteristics and a dual output windings DCM flyback converter.This paper explains clearly the basic principle of the flyback PFC converter with low output voltage ripple and detailed analyzes the key point of the converter to achieve a low output voltage ripple.Finally,experiments verify the theoretical analysis.Experimental results show that the output voltage ripple of the proposed converter in this paper is very low, but also the load transient response of the proposed converter is fast.

关 键 词：变换器 断续导电模式 功率因数校正 

分 类 号：TM46[电气工程—电器]