A Novel Soft-Switching Boost Converter With Magnetically Coupled Resonant Snubber

Author

Tianwen Zhan ; Yingchao Zhang ; Jintong Nie ; Yongchang Zhang ; Zhengming Zhao

Author_Institution

Key Lab. of Special Power Supply of PLA, Chongqing Commun. Inst., Chongqing, China

Volume

29

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

5680

Lastpage

5687

Abstract

A novel soft-switching boost converter with a magnetically coupled resonant snubber is presented in this paper. The passive snubber circuit, which is composed of two diodes, two capacitors, and one coupled inductor, ensures a zero current turn-on and zero voltage turn-off conditions for the power switch, and alleviates the reverse-recovery problem for the output diode. Moreover, with the proper design of the snubber circuit, the power switch and output diode can be softly switched in a wide load range. The operating principle and performance analysis of the proposed converter are described in detail. The experiment from a 400 W prototype has been carried out and the results show that the proposed converter has the advantages of simple structure, low complexity control, and the highest efficiency is more than 95%.

Keywords

capacitors; diodes; inductors; resonant power convertors; snubbers; switching convertors; zero current switching; zero voltage switching; capacitors; diodes; inductor; magnetically coupled resonant snubber; passive snubber circuit; power 400 W; power switch; reverse-recovery problem; soft-switching boost converter; zero current turn-on conditions; zero voltage turn-off conditions; Capacitors; Electromagnetic interference; Inductors; Snubbers; Stress; Switches; Switching circuits; Boost converter; coupled inductor; passive lossless snubber; soft-switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2013.2295887

Filename

6697890