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A Study of Two Multi-Element Resonant DC-DC Topologies with Loss Distribution Analyses

Author

Listed:
  • Yifeng Wang

    (School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
    These authors contributed equally to this work.)

  • Liang Yang

    (School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
    These authors contributed equally to this work.)

  • Fuqiang Han

    (School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
    These authors contributed equally to this work.)

  • Shijie Tu

    (State Grid Jiangxi Electric Power Company Repair Branch, Nanchang 330000, China)

  • Weiya Zhang

    (State Grid Nanjing Power Supply Company, Nanjing 210000, China)

Abstract

In this paper, two multi-element resonant DC-DC converters are analyzed in detail. Since their resonant tanks have multiple resonant components, the converters display different resonant characteristics within different operating frequency ranges. Through appropriate design, both of the two proposed converters successfully lower the conversion losses and, meanwhile, broaden the voltage gain ranges as well: one converter is able to take full usage of the third order harmonic to deliver the active power, and thus the effective utilization rate of the resonant current is elevated; while the another minimizes the entire switching losses for power switching devices by restricting the input impedance angle of the resonant tank. Besides, the loss distribution is analyzed for the purpose of guiding the component design. In the end, two 500 W prototypes are fabricated to test the theoretical analyses. The results demonstrate that the two proposed converters can achieve wide voltage gain with the small frequency deviation, which noticeably contributes to highly efficient conversion. Their peak efficiencies are measured as 95.4% and 95.3%, respectively.

Suggested Citation

  • Yifeng Wang & Liang Yang & Fuqiang Han & Shijie Tu & Weiya Zhang, 2017. "A Study of Two Multi-Element Resonant DC-DC Topologies with Loss Distribution Analyses," Energies, MDPI, vol. 10(9), pages 1-18, September.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:9:p:1400-:d:111774
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    References listed on IDEAS

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    1. Hong-Yu Li & Xiaodong Li & Ming Lu & Song Hu, 2015. "A Linearized Large Signal Model of an LCL-Type Resonant Converter," Energies, MDPI, vol. 8(3), pages 1-17, March.
    2. Cheng-Shan Wang & Wei Li & Yi-Feng Wang & Fu-Qiang Han & Bo Chen, 2017. "A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter," Energies, MDPI, vol. 10(7), pages 1-22, July.
    3. Song Hu & Xiaodong Li & Ming Lu & Bo-Yue Luan, 2015. "Operation Modes of a Secondary-Side Phase-Shifted Resonant Converter," Energies, MDPI, vol. 8(11), pages 1-17, October.
    4. Jae-Hyun Han & Young-Cheol Lim, 2015. "Design of an LLC Resonant Converter for Driving Multiple LED Lights Using Current Balancing of Capacitor and Transformer," Energies, MDPI, vol. 8(3), pages 1-20, March.
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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. Michal Frivaldsky & Branislav Hanko & Michal Prazenica & Jan Morgos, 2018. "High Gain Boost Interleaved Converters with Coupled Inductors and with Demagnetizing Circuits," Energies, MDPI, vol. 11(1), pages 1-20, January.

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