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A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side

Author

Listed:
  • Duong Tran

    (Electrical Engineering Department, Soongsil University, 369 Sang-doro, Seoul, Korea)

  • Nam Vu

    (Electrical Engineering Department, Soongsil University, 369 Sang-doro, Seoul, Korea)

  • Woojin Choi

    (Electrical Engineering Department, Soongsil University, 369 Sang-doro, Seoul, Korea)

Abstract

A novel Pulse-Width-Modulation (PWM) quasi-resonant active-clamp phase-shifted full-bridge converter is presented and analyzed in this paper. In the proposed topology, an active-clamp switch and a clamp capacitor that resonates with the leakage inductance of transformer are employed at the secondary side. The active-clamp circuit helps all of the primary switches in achieving both zero-voltage switching (ZVS) turn-on and nearly zero-current switching (ZCS) turn-off over the entire load range, and resets the primary current during the freewheeling interval. The operation of the active-clamp circuit eliminates voltage ringing across the rectifier. In addition, the secondary diodes can achieve ZCS turn-off, which removes the reverse recovery problem of diodes, and the active-clamp switch can achieve ZCS turn-on. A 3.5-kW prototype was built to verify the performance of the proposed converter. A maximum efficiency of 97.6% was achieved under a 2-kW load, and an efficiency of more than 96% was achieved even under a light load.

Suggested Citation

  • Duong Tran & Nam Vu & Woojin Choi, 2018. "A Quasi-Resonant ZVZCS Phase-Shifted Full-Bridge Converter with an Active Clamp in the Secondary Side," Energies, MDPI, vol. 11(11), pages 1-21, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:2868-:d:177757
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    References listed on IDEAS

    as
    1. Chuan Sun & Xiaodong Li, 2018. "Fast Transient Modulation for a Step Load Change in a Dual-Active-Bridge Converter with Extended-Phase-Shift Control," Energies, MDPI, vol. 11(6), pages 1-22, June.
    2. Wenzheng Xu & Nelson Hon Lung Chan & Siu Wing Or & Siu Lau Ho & Ka Wing Chan, 2017. "A New Control Method for a Bi-Directional Phase-Shift-Controlled DC-DC Converter with an Extended Load Range," Energies, MDPI, vol. 10(10), pages 1-17, October.
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    Cited by:

    1. Jing-Yuan Lin & Yi-Feng Lin & Sih-Yi Lee, 2019. "A Novel Multi-Element Resonant Converter with Self-Driven Synchronous Rectification," Energies, MDPI, vol. 12(4), pages 1-10, February.
    2. Vu-Hai Nam & Duong-Van Tinh & Woojin Choi, 2021. "A Novel Hybrid LDC Converter Topology for the Integrated On-Board Charger of Electric Vehicles," Energies, MDPI, vol. 14(12), pages 1-18, June.
    3. Sajib Chakraborty & Hai-Nam Vu & Mohammed Mahedi Hasan & Dai-Duong Tran & Mohamed El Baghdadi & Omar Hegazy, 2019. "DC-DC Converter Topologies for Electric Vehicles, Plug-in Hybrid Electric Vehicles and Fast Charging Stations: State of the Art and Future Trends," Energies, MDPI, vol. 12(8), pages 1-43, April.

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