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Analysis of an Interleaved Resonant Converter for High Voltage and High Current Applications
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 Title & Authors
Analysis of an Interleaved Resonant Converter for High Voltage and High Current Applications
Lin, Bor-Ren; Chen, Chih-Chieh;
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 Abstract
This paper presents an interleaved resonant converter to reduce the voltage stress of power MOSFETs and achieve high circuit efficiency. Two half-bridge converters are connected in series at high voltage side to limit MOSFETs at voltage stress. Flying capacitor is used between two series half-bridge converters to balance two input capacitor voltages in each switching cycle. Variable switching frequency scheme is used to control the output voltage. The resonant circuit is operated at the inductive load. Thus, the input current of the resonant circuit is lagging to the fundamental input voltage. Power MOSFETs can be turn on under zero voltage switching. Two resonant circuits are connected in parallel to reduce the current stress of transformer windings and rectifier diodes at low voltage side. Interleaved pulse-width modulation is adopted to decrease the output ripple current. Finally, experiments are presented to demonstrate the performance of the proposed converter.
 Keywords
Flying capacitor;DC converter;
 Language
English
 Cited by
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