A primary-side-assisted zero-voltage and zero-current switching three-level DC-DC converter with phase-shift control

Author

Jeon, S.J. ; Canales, F. ; Barbosa, P.M. ; Lee, F.C.

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

641

Abstract

A new primary-side-assisted zero-voltage and zero-current switching (ZVZCS) three-level DC-DC converter with phase-shift control is proposed. Three-level converters show promise for use in high-voltage applications, and ZVZCS is a very effective means for reducing switching losses. The proposed DC-DC converter uses only one auxiliary transformer and two diodes to achieve ZCS for the inner leg. It has a simple and robust structure, and offers soft-switching capability even in short-circuited conditions. The proposed converter was verified by experiments using a 6 kW prototype designed for communication applications and operating at 100 kHz

Keywords

DC-DC power convertors; phase shifters; power transformers; switching circuits; 100 kHz; 6 kW; ZVZCS; auxiliary transformer; diodes; phase-shift control; primary-side-assisted zero-voltage zero-current switching three-level DC-DC converter; robust structure; soft-switching capability; switching losses reduction; Capacitors; Circuits; DC-DC power converters; Diodes; Inductors; Pulse transformers; Switches; Switching converters; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE

Conference_Location

Dallas, TX

Print_ISBN

0-7803-7404-5

Type

conf

DOI

10.1109/APEC.2002.989313

Filename

989313