• 제목/요약/키워드: Idle and circulating currents

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High-Frequency Forward Transformer Linked PWM DC-DC Power Converter with Zero Voltage Switching and Zero Current Switching Bridge Legs

  • Moisseev, Serguei;Hamada, Satoshi;Ishitobi, Manabu;Hiraki, Eiji;Nakaoka, Mutsuo
    • Journal of Power Electronics
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    • 제2권4호
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    • pp.278-287
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    • 2002
  • A novel zero-voltage and zero-current switching PWM DC-DC converter with lowered conduction losses is presented in this paper. A new double two-switch forward high frequency transformer type soft-switching converter topology is developed to minimize circulating currents occurs during freewheeling period. This converter has advantages as less number of the components, simple control principle under constant operation frequency, free of transformer Imbalance effect. The principle of operation is illustrated with steady-state analysis. Moreover, the effectiveness of the proposed converter topology is verified by implementation of a 500w-100kHz breadboard using IGBTs.