Continuous-conduction-mode SEPIC converter with low reverse-recovery loss for power factor correction

Author

Kwon, Jung-Min ; Choi, Won-Yong ; Lee, Jae-Jun ; Kim, E.-H. ; Kwon, Bong-Hwan

Author_Institution

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

Volume

153

Issue

5

fYear

2006

fDate

9/1/2006 12:00:00 AM

Firstpage

673

Lastpage

681

Abstract

A continuous-conduction-mode SEPIC converter with low reverse-recovery loss is proposed for power factor correction. The proposed SEPIC converter can reduce the reverse-recovery loss of the diodes and improve the power efficiency. By utilising a coupled inductor and an additional diode, zero-current turn-off of the output diode is achieved. The reverse-recovery current of the additional diode is reduced by the leakage inductor of the coupled inductor. The proposed SEPIC converter provides high power efficiency and high power factor compared to the conventional PFC circuits employing the SEPIC converter. An operation principle and a detailed analysis of the proposed converter are presented. Experimental results are discussed for a 300 W (330 V/0.9 A) prototype under the universal input voltage (90-265 V). It is shown that the efficiency of the SEPIC converter can be significantly improved

Keywords

power convertors; power factor correction; switching convertors; zero current switching; 0.9 A; 300 W; 330 V; 90 to 265 V; continuous-conduction-mode SEPIC converter; coupled inductor; low reverse-recovery loss; power efficiency; power factor correction; single-ended primary inductance converter; zero-current diode turn-off;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings

Publisher

iet

ISSN

1350-2352

Type

jour

Filename

1705888