An Improved Current-Doubler with Coupled Inductors

Author

Wu, T.-F. ; Tsai, C.-T. ; Lin, W.-C. ; Chen, Y.-M.

Author_Institution

Dept. of Electr. Eng., Nat. Chung Chen Univ., Ming-Hsiung

Volume

1

fYear

2006

fDate

14-16 Aug. 2006

Firstpage

1

Lastpage

5

Abstract

In this paper, an improved current-doubler rectifier with coupled inductors is proposed, which can extend duty ratio to reduce the peak current through the isolation transformer and to lower output current ripple. Additionally, passive lossless snubbers are introduced to reduce reverse recovery loss and clamp the voltage spike across the rectifier diodes. In this study, a 500 W prototype with a full-bridge phase-shift converter, the proposed rectifier, input voltage of 400 V and output voltage of 12 V was built, from which experimental measurements have shown that the efficiency can reach as high as 92% under full load condition

Keywords

DC-DC power convertors; power inductors; rectifying circuits; snubbers; 12 V; 400 V; 500 W; coupled inductors; current ripple; current-doubler rectifier; duty ratio; full-bridge phase-shift converter; isolation transformer; passive lossless snubbers; rectifier diodes; reverse recovery loss; Capacitors; Clamps; Diodes; Inductors; Magnetic separation; Prototypes; Rectifiers; Snubbers; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International

Conference_Location

Shanghai

Print_ISBN

1-4244-0448-7

Type

conf

DOI

10.1109/IPEMC.2006.4777957

Filename

4777957