High-performance front-end rectifier system for telecommunication power supplies

Author

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

Author_Institution

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

Volume

153

Issue

4

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

473

Lastpage

482

Abstract

A high-performance front-end rectifier system is proposed for telecommunication power supplies. The proposed system consists of a boost converter for power-factor correction (PFC) and a asymmetrical half-bridge zeta converter for DC-DC power conversion. A cost-effective implementation for a continuous-conduction-mode boost converter is proposed for a PFC circuit. With a simple passive approach, the proposed PFC circuit minimises switching losses by reducing the reverse-recovery current. The asymmetrical half-bridge zeta converter operates under zero-voltage switching for the power switches and its output diode commutates with zero-current switching. The proposed front-end rectifier system is analysed and its design considerations are discussed. Experimental results for a 300 W prototype at a constant switching frequency of 100 kHz are presented to verify the analysis and to show the performance of the proposed system

Keywords

DC-DC power convertors; bridge circuits; diodes; losses; power factor correction; rectifying circuits; switching convertors; telecommunication power supplies; zero current switching; zero voltage switching; 100 kHz; 300 W; DC-DC power conversion; PFC; continuous-conduction-mode boost converter; diode commutation; front-end rectifier system; half-bridge zeta converter; power switches; power-factor correction; reverse-recovery current; switching losses; telecommunication power supplies; zero-current switching; zero-voltage switching;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

Filename

1650862