Single-stage half-bridge converter using a coupled-inductor

Author

Kwon, J.-M. ; Choi, W.-Y. ; Do, H.-L. ; Kwon, B.-H.

Author_Institution

Dept. of Electron. & Electr. Eng., Pohang Univ. of Sci. & Technol., South Korea

Volume

152

Issue

3

fYear

2005

fDate

5/6/2005 12:00:00 AM

Firstpage

748

Lastpage

756

Abstract

A single-stage half-bridge flyback converter with high power factor and high efficiency is proposed. A half-bridge flyback converter is coupled to the line voltage for power factor correction (PFC) and driven in complementary control for zero-voltage switching. The proposed PFC can achieve almost unity power factor and ripple-free input current using a coupled inductor. The half-bridge DC-DC converter is analysed and optimised for high power efficiency. Experimental results for a 200 W converter at a constant switching frequency of 100 kHz are obtained to show the performance of the proposed converter.

Keywords

DC-DC power convertors; PWM power convertors; bridge circuits; power factor correction; power inductors; zero voltage switching; 100 kHz; 200 W; DC-DC converter; PFC; asymmetrical pulse-width modulated half-bridge converter; coupled-inductor; half-bridge flyback converter; power factor correction; ripple-free input current; single-stage half-bridge converter; switching frequency; zero-voltage switching;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:20055262

Filename

1436201