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

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3 Author(s)
Redl, R. ; ELFI SA, Derrey-la-Cabuche, Switzerland ; Balogh, L. ; Edwards, D.W.

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

Published in:

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

Date of Conference:

13-17 Feb 1994