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Boost and Buck-Boost Power-Factor-Corrected AC-to-DC Resonant Converters with ZVS Operation

The research presents two novel high power factor ac-to-dc resonant converters with symmetrical topologies and zero-voltage-switching (ZVS) operation. The derived circuits are obtained from the integration of a dual-switch boost-type or buck-boost-type power factor corrector (PFC) into a half-bridge resonant converter. With symmetrical topology, the circuit is simple and the voltage and current stresses on the two active power switches are identical to each other.
The PFC is operated at discontinuous conduction mode (DCM) to achieve unity power factor. The resonant energy tank of half-bridge resonant converter is designed to be inductive to retain ZVS operation. The design equations are derived based on fundamental approximation. Prototypes of the two proposed converters designed for 100 W and 50 W, respectively, were built and tested to verify the computer simulations and analytical predictions. Satisfactory results are obtained experimentally.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0731108-133433
Date31 July 2008
CreatorsLi, Yan-Cun
ContributorsTsai-Fu Lin, Chin-Sien Moo, Jia-You Lee, Jiann-Fuh Chen, Yong-Nong Chang
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731108-133433
Rightsnot_available, Copyright information available at source archive

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