Optimum ZVS full-bridge DC/DC converter with PWM phase-shift control: analysis, design considerations, and experimental results

Author

Redl, Richard ; Balogh, Laszlo ; Edwards, David W.

Author_Institution

ELFI SA, Derrey-la-Cabuche, Switzerland

fYear

1994

fDate

13-17 Feb 1994

Firstpage

159

Abstract

By adding a simple external commutating aid circuit to the full-bridge DC/DC converter with phase-shift control and by reducing the magnetizing inductance, optimum performance (i.e. ZVS operation and high conversion efficiency) can be achieved from full load down to almost zero load. An analysis is presented to determine the required and available commutation energies. The analysis is complemented with design considerations and experimental results taken from a 3-kW converter operating at 200-kHz clock frequency

Keywords

bridge circuits; commutation; phase control; power convertors; pulse width modulation; switching circuits; 200 kHz; 3 kW; PWM phase-shift control; ZVS full-bridge DC/DC converter; commutating aid circuit; commutation energies; magnetizing inductance reduction; zero voltage switching; Clamps; DC-DC power converters; Inductance; Inductors; Pulse width modulation; Pulse width modulation converters; Rectifiers; Semiconductor diodes; Switching circuits; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual

Conference_Location

Orlando, FL

Print_ISBN

0-7803-1456-5

Type

conf

DOI

10.1109/APEC.1994.316405

Filename

316405