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Comparison of Bi-Directional Topologies for On-Board Charger: A 10.9 kW High-Efficiency High Power Density of DC-DC Stage

Author

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  • Hyeong-Seok Oh

    (Department of Electrical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea)

  • Seong-Yong Hong

    (School of Railway Engineering, Korea National University of Transportation, 157, Cheoldobangmulgwan-ro, Uiwang-si 16106, Republic of Korea)

  • Ju Lee

    (Department of Electrical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea)

  • Jae-Bum Lee

    (School of Railway Engineering, Korea National University of Transportation, 157, Cheoldobangmulgwan-ro, Uiwang-si 16106, Republic of Korea)

Abstract

In recent years, the trend in power electronics has been toward high-efficiency and high-power-density converters. Additionally, this trend has allowed electric vehicles to accommodate larger batteries, which necessitate bi-directional capabilities not only for driving but also for vehicle to grid (V2G), etc. This article proposes a comparative analysis of GaN-based bi-directional topologies, namely the dual active bridge (DAB) converter and the CLLC converter. To ensure a fair analysis of the proposed topologies, prototypes with the same target of efficiency above 97.5% and a power density of 5.5 kW/L have been constructed. This research can support the adoption of 10.9 kW bi-directional topologies in GaN-based on-board chargers (OBCs) for EVs.

Suggested Citation

  • Hyeong-Seok Oh & Seong-Yong Hong & Ju Lee & Jae-Bum Lee, 2024. "Comparison of Bi-Directional Topologies for On-Board Charger: A 10.9 kW High-Efficiency High Power Density of DC-DC Stage," Energies, MDPI, vol. 17(21), pages 1-22, November.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:21:p:5496-:d:1513074
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    References listed on IDEAS

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    1. Manzetti, Sergio & Mariasiu, Florin, 2015. "Electric vehicle battery technologies: From present state to future systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 1004-1012.
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