DocumentCode :
825084
Title :
A high-efficiency soft-switched AC/DC converter with current-doubler synchronous rectification
Author :
Chiu, Huang-Jen ; Lin, Li-Wei
Author_Institution :
Dept. of Electr. Eng., Chung-Yuan Christian Univ., Chung-li, Taiwan
Volume :
52
Issue :
3
fYear :
2005
fDate :
6/1/2005 12:00:00 AM
Firstpage :
709
Lastpage :
718
Abstract :
An improved ac/dc converter based on asymmetrical half-bridge topology is proposed in this paper. To substantially enhance the efficiency for low-voltage/high-current output applications, a current-doubler synchronous rectifier is combined with a modified asymmetrical half-bridge converter that retains the inherent zero-voltage-switching property. The power losses in the secondary rectification stage and the primary switches can be significantly reduced. The proposed architecture exhibits extreme simplicity and lower cost while providing unity power factor, well-regulated output, and high power density. The detailed operating principles and design procedures for the proposed converter are described in this paper. Simulation and experimental results for a laboratory prototype are discussed to verify the feasibility.
Keywords :
AC-DC power convertors; bridge circuits; losses; power factor correction; rectifying circuits; switching convertors; zero voltage switching; asymmetrical half-bridge topology; cost effective power converter; current-doubler synchronous rectification; efficiency enhancement; high-efficiency soft-switched AC/DC converter; low-voltage high-current output application; modified asymmetrical half-bridge converter; power losses; primary switches; zero-voltage-switching property; Circuit topology; Costs; DC-DC power converters; Diodes; Inductors; Low voltage; Rectifiers; Strontium; Switches; Switching converters; Asymmetrical half-bridge (AHB); current-doubler synchronous rectifier; single-stage;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2005.843963
Filename :
1435682
Link To Document :
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