Fully soft switched and high power factor AC-DC converter

Author

Bodur, H. ; Cetin, S. ; Yanik, G.

Author_Institution

Dept. of Electr. Eng., Yildiz Tech. Univ., Istanbul, Turkey

fYear

2012

fDate

27-29 March 2012

Firstpage

1

Lastpage

6

Abstract

In this study, a fully soft switched and high power factor AC-DC converter is proposed. In this fully soft switched and high power factor AC-DC converter, main switch turns on with zero voltage transition (ZVT) and turns off with zero voltage switching (ZVS). The auxiliary switch turnes on and off with current switching (ZCS) and ZVS, respectively. The main diode and all of auxiliary diodes operate with SS. Furthermore most of SS energy stored in the snubber inductance is transferred effectively to the output by a transformer and so the current stress on the auxiliary switch is reduced significantly. In this converter, no semiconductor device has any additional voltage stresses and SS operating conditions are maintained at very wide line and load ranges. The performance of the proposed fully soft switched and high power factor AC-DC converter is verified experimentally with a 1 kW and 100 kHz prototype.

Keywords

AC-DC power convertors; power factor correction; power transformers; snubbers; switching convertors; zero current switching; zero voltage switching; AC-DC power converter; SS energy storage; ZCS; ZVS; auxiliary diode; current stress; frequency 100 kHz; power 1 kW; power factor; snubber inductance; soft switched converter; transformer; zero current switching; zero voltage switching; zero voltage transition; Power factor correction; boost converter; soft switching;

fLanguage

English

Publisher

iet

Conference_Titel

Power Electronics, Machines and Drives (PEMD 2012), 6th IET International Conference on

Conference_Location

Bristol

Electronic_ISBN

978-1-84919-616-1

Type

conf

DOI

10.1049/cp.2012.0235

Filename

6242085