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A Novel High Efficiency Quasi-Resonant Converter

Author

Listed:
  • Tianyu Zhu

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Jianze Wang

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Yanchao Ji

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Yiqi Liu

    (School of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China)

Abstract

In this paper, a new constant-frequency quasi-resonant converter is proposed. Compared with the traditional LLC converter, the proposed converter can effectively reduce the range of the operating frequency. The output voltage is changed to adjust the reactance of the resonant cavity. The proposed converter has a better loss factor. To verify the theoretical analysis and soft-switching condition, a 250 W, 100 V output prototype was built and compared with the full-bridge LLC converter. Analysis and experimental results verify that a smaller operating frequency range and volume of the transformers, a soft-switching condition, and a higher overall efficiency are achieved with the proposed converter.

Suggested Citation

  • Tianyu Zhu & Jianze Wang & Yanchao Ji & Yiqi Liu, 2018. "A Novel High Efficiency Quasi-Resonant Converter," Energies, MDPI, vol. 11(8), pages 1-14, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:8:p:1961-:d:160460
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    Citations

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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.

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