Zero voltage switching Forward-Flyback Converter with efficient active LC snubber circuit

Author

Chen, Fan ; Amirahmadi, Ahmadreza ; Batarseh, Issa

Author_Institution

Dept. of Electr. Eng., Univ. of Central Florida, Orlando, FL, USA

fYear

2014

fDate

16-20 March 2014

Firstpage

2041

Lastpage

2047

Abstract

This paper describes a Boundary Mode Forward-Flyback Converter (BMFFC) with zero-voltage switching that is able to process power efficiently. The theoretical analysis and operating principle of the BMFFC are presented in detail. A non-dissipative LC snubber that recycles energy to the input source is employed in order to suppress the voltage spike caused by the leakage inductance of the transformer. The relatively large snubber capacitor also significantly reduces turn-off loss. Following a detailed design procedure, a 200W prototype with a 25-50VDC input and 230VDC output was constructed and tested in order to evaluate the performance of the BMFFC.

Keywords

LC circuits; capacitors; network synthesis; power supply quality; snubbers; switching convertors; transformers; zero voltage switching; BMFFC; boundary mode forward-flyback converter; efficient active LC snubber circuit; leakage inductance; nondissipative LC snubber; performance evaluation; power 200 W; snubber capacitor; transformer; turn-off loss reduction; voltage 230 V; voltage 25 V to 50 V; voltage spike suppression; zero voltage switching forward-flyback converter; Capacitors; Inductance; Inductors; MOSFET; Magnetic resonance; Snubbers; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE

Conference_Location

Fort Worth, TX

Type

conf

DOI

10.1109/APEC.2014.6803587

Filename

6803587