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Design Considerations of Series-Connected Devices Based LLC Converter

Author

Listed:
  • Dongkwan Yoon

    (Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea)

  • Sungmin Lee

    (Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea)

  • Younghoon Cho

    (Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea)

Abstract

This paper describes the design of a Series-Connected Device based on a fixed–frequency LLC resonant converter (SCDLLC). Isolation of the dc-dc converter like the LLC resonant converter is used for the stability of the high voltage system such as a solid-state-transformer (SST). The series-connected devices driving method is one of the methods applicable to a high voltage system. When driving series-connected devices, an auxiliary circuit for voltage balancing between series-connected devices is required, which can be simply implemented using a passive element. In this paper, LLC converter design with balancing circuits configured in parallel with a device is provided, and both the simulations and experiments were performed.

Suggested Citation

  • Dongkwan Yoon & Sungmin Lee & Younghoon Cho, 2020. "Design Considerations of Series-Connected Devices Based LLC Converter," Energies, MDPI, vol. 13(1), pages 1-14, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:1:p:264-:d:305425
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    Citations

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    Cited by:

    1. Min-Soo Kim & Do-Hyun Kim & Dong-Keun Jeong & Jang-Mok Kim & Hee-Je Kim, 2020. "Soft Start-Up Control Strategy for Dual Active Bridge Converter with a Supercapacitor," Energies, MDPI, vol. 13(16), pages 1-19, August.
    2. Flavio Palmiro & Ruben B. Godoy & Tiago H. d. A. Mateus & Nicholas D. de Andrade, 2023. "A 600 W Photovoltaic Groundwater Pumping System Based on LLC Converter and Constant Voltage MPPT," Energies, MDPI, vol. 16(13), pages 1-12, June.
    3. Hwa-Pyeong Park & Mina Kim & Jee-Hoon Jung, 2020. "A Comprehensive Overview in Control Algorithms for High Switching-Frequency LLC Resonant Converter," Energies, MDPI, vol. 13(17), pages 1-17, August.

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