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Extension of Zero Voltage Switching Capability for CLLC Resonant Converter

Author

Listed:
  • HwaPyeong Park

    (Ulsan National Institute of Science and Technology (UNIST), Ulsan KS017, Korea)

  • DoKyoung Kim

    (LIG Nex1, Seongnam KS009, Korea)

  • SeungHo Baek

    (LIG Nex1, Seongnam KS009, Korea)

  • JeeHoon Jung

    (Ulsan National Institute of Science and Technology (UNIST), Ulsan KS017, Korea)

Abstract

TheCLLC resonant converter has been widely used to obtaina high power conversion efficiency with sinusoidal current waveforms and a soft switching capability. However, it has a limited voltage gain range according to the input voltage variation. The current-fed structure canbe one solution to extend the voltage gain range for the wide input voltage variation, butit has a limited zero voltage switching (ZVS) range. In this paper, the current-fed CLLC resonant converter with additional inductance is proposed to extend the ZVS range. The operational principle is analyzed to design the additional inductance for obtaining the extended ZVS range. The design methodology of the additional inductance is proposed to maximize the ZVS capability for the entire load range. The performance of the proposed method is verified with a 20 W prototype converter.

Suggested Citation

  • HwaPyeong Park & DoKyoung Kim & SeungHo Baek & JeeHoon Jung, 2019. "Extension of Zero Voltage Switching Capability for CLLC Resonant Converter," Energies, MDPI, vol. 12(5), pages 1-14, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:5:p:818-:d:210167
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    References listed on IDEAS

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    1. Yueh-Tsung Shieh & Chih-Chiang Wu & Shyr-Long Jeng & Ching-Yao Liu & Shiang-Yu Hsieh & Chi-Chun Haung & Wen-Yuh Shieh & Wei-Hua Chieng & Edward-Yi Chang, 2023. "A Turn-Ratio-Changing Half-Bridge CLLC DC–DC Bidirectional Battery Charger Using a GaN HEMT," Energies, MDPI, vol. 16(16), pages 1-28, August.

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