Journal of Power Electronics

  • 제26권2호
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  • Pages.316-329
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  • 2026
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Soft switching characteristic analysis and design of an interleaved boost-integrated bidirectional CLLC resonant converter

  • Fangyong Wang (Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology) ;
  • Shucheng Li (Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology) ;
  • Bangyin Liu (Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology) ;
  • Jing Chen (Wuhan Second Ship Design and Research Institute) ;
  • Rui Li (Wuhan Second Ship Design and Research Institute) ;
  • Weilong Zhang (Wuhan Second Ship Design and Research Institute) ;
  • Li Fang (Wuhan Second Ship Design and Research Institute) ;
  • Zhengqing Zhang (Wuhan Second Ship Design and Research Institute)
  • 투고 : 2024.12.02
  • 심사 : 2025.05.27
  • 발행 : 2026.02.20
⟨ 이전 논문 다음 논문 ⟩

초록

A current-fed isolated bidirectional DC-DC resonant converter has the advantages of wide voltage gain, low current ripple, and power transfer in both directions, but input voltage and load changes affect the resonant current during switching, influencing the soft switching performance of the converter. When the converter cannot achieve soft switching, its operating frequency is limited, and its operating efficiency is greatly reduced. In this study, an interleaved boost-integrated bidirectional CLLC resonant converter with a fixed-frequency synchronous PWM control strategy is comprehensively analyzed for the soft switching operating range. Considering the semiconductor junction capacitance, the design guidelines for the full-range soft switching parameters of the converter are given, including the design of the transformer turns ratio, input inductance, resonance impedance, and inductance ratio. The experimental results based on GaN-HEMT verify the validity of the converter and the correctness of the theoretical analysis.

키워드

참고문헌

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