Title :
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
fDate :
9/1/2006 12:00:00 AM
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;
Journal_Title :
Electric Power Applications, IEE Proceedings
