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A High-Power DC-DC Converter Topology for Battery Charging Applications

Author

Listed:
  • Il-Oun Lee

    (Department of Electric Engineering, Myongji Unversity, Yongin-Si 449-728, Korea)

  • Jun-Young Lee

    (Department of Electric Engineering, Myongji Unversity, Yongin-Si 449-728, Korea)

Abstract

A DC-DC converter that can be applied for battery chargers with the power-capacity of over 7-kW for electric vehicles (EVs) is presented in this paper. Due to a new architecture, the proposed converter achieves a reduction of conduction losses at the primary side by as much as 50% and has many benefits such as much smaller circulating current, less duty-cycle loss, and lower secondary-voltage stress. In addition, its power handing capacity can be upsized easily with the use of two full-bridge inverters and two transformers. Besides, all the switches in the converter achieve zero-voltage switching (ZVS) during whole battery charging process, and the size of output filter can be significantly reduced. The circuit configuration, operation, and relevant analysis are presented, followed by the experiment on a prototype realized with a 7-kW charger. The experimental results validate the theoretical analysis and show the effectiveness of the proposed converter as battery charger.

Suggested Citation

  • Il-Oun Lee & Jun-Young Lee, 2017. "A High-Power DC-DC Converter Topology for Battery Charging Applications," Energies, MDPI, vol. 10(7), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:871-:d:102970
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    Citations

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    Cited by:

    1. Stefania Cuoghi & Riccardo Mandrioli & Lorenzo Ntogramatzidis & Grandi Gabriele, 2020. "Multileg Interleaved Buck Converter for EV Charging: Discrete-Time Model and Direct Control Design," Energies, MDPI, vol. 13(2), pages 1-18, January.
    2. Yiwang Wang & Chun Gan & Kai Ni & Xinhua Li & Houjun Tang & Yong Yang, 2017. "A Multifunctional Isolated and Non-Isolated Dual Mode Converter for Renewable Energy Conversion Applications," Energies, MDPI, vol. 10(12), pages 1-17, November.
    3. Chien-Chun Huang & Tsung-Lin Tsai & Yao-Ching Hsieh & Huang-Jen Chiu, 2018. "A Bilateral Zero-Voltage Switching Bidirectional DC-DC Converter with Low Switching Noise," Energies, MDPI, vol. 11(10), pages 1-18, October.

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