Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (1): 57-61.

Previous Articles     Next Articles

A DCM Single-Stage High Power Factor Converter Based on Asymmetrical Half-Bridge Circuit

Yun Hua-jie  Li Yi   

  1. College of Electric Power,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-03-22 Online:2005-01-25 Published:2005-01-25
  • Contact: 尹华杰(1966-)，男，副教授，主要从事微特电机设计与控制、工程电磁场计算方面的研究 E-mail:epyi@scut.edu.cn
  • About author:尹华杰(1966-)，男，副教授，主要从事微特电机设计与控制、工程电磁场计算方面的研究

PDF

386

Abstract:

The operation mode and characteristics of a single-stage AC/DC PFC (Power Factor Correction)converter with an asymmetrical half-bridge topology are analyzed in this paper.The numerical simulation is then carried out by using the SIMetrix software,followed by an experiment of a prototype converter.Th e simulated and experi-mental results show that the proposed single-stage PFC converter works in discontinuous conduction mode(DCM) and is of excellent PFC and soft-switching performances with very high power factor and efficiency.

Key words: asymmetrical half-bridge converter, soft switching, power factor corection, discontinuous conduction mode