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A Novel Resonant Transition Half-Bridge Converter

Swaminathan, B and Ramanarayanan, V (2004) A Novel Resonant Transition Half-Bridge Converter. In: Conference Record of the 2004 IEEE Industry Applications Conference 39th IAS Annual Meeting, 3-7 October, Seattle, WA, USA, vol.3, 1782-1789.


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Resonant transition converters are characterized by low switching losses and low conduction losses. This paper proposes a novel half-bridge resonant transition converter with soft switching properties. The improvised half-bridge converter uses two additional switches and two diodes. The additional switches introduce freewheeling intervals in the primary circuit and thus enable loss-less switching. In classical half-bridge converter, the transformer primary is left open during two subintervals in a period. On account of this feature, the turn-on of the switch in these converters is always hard. The new circuit topology converts these open circuit intervals into freewheeling intervals with such a modification, all trapped energy in the core is conserved to achieve ZVS during all the switching transition. The principle of operation of the proposed topology is explained. Design procedure is explained. Design procedure is validated through a prototype converter rated 300kHz, 640W half-bridge converter.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Half-bridge converter;Push-pull converter;ZVS;Resonant transition
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 25 Aug 2008
Last Modified: 19 Sep 2010 04:35
URI: http://eprints.iisc.ac.in/id/eprint/10099

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