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Average Model of Switched-Energy-Tank Battery Equalizer for Accelerated Performance Assessment

Author

Listed:
  • Phuong-Ha La

    (Department of Electrical, Electronic and Computer Engineering, University of Ulsan, Ulsan 44610, Republic of Korea)

  • Nguyen-Anh Nguyen

    (Department of Electrical, Electronic and Computer Engineering, University of Ulsan, Ulsan 44610, Republic of Korea)

  • Sung-Jin Choi

    (Department of Electrical, Electronic and Computer Engineering, University of Ulsan, Ulsan 44610, Republic of Korea)

Abstract

Assessing the performance of active balancing methods poses a significant challenge due to the time required to replicate the equalization of various balancing techniques under identical initial cell conditions. Conventional circuit simulation methods, designed for high-frequency switching behavior, impose a considerable computational burden when applied to the long-term equalization of battery cells. To address this challenge, this paper presents an efficient performance evaluation method employing an average equivalent model of the equalizers. By representing the charge transfer mechanism inherent to the equalization process, the proposed approach is compatible with the most widely used switched-energy-tank equalizers. The validity of this method is confirmed through simulation and experimental results. In the case of four series-connected battery cells, our proposed approach can assess the performance of a three-hour equalization process in just one minute of execution time. The use cases in the paper highlight the practical feasibility of the AM in facilitating performance comparisons of SET-Es under various initial conditions.

Suggested Citation

  • Phuong-Ha La & Nguyen-Anh Nguyen & Sung-Jin Choi, 2024. "Average Model of Switched-Energy-Tank Battery Equalizer for Accelerated Performance Assessment," Energies, MDPI, vol. 17(3), pages 1-18, January.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:3:p:631-:d:1328316
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    References listed on IDEAS

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    2. Murat Ceylan & Abdulkadir Balikci, 2023. "An Intermodular Active Balancing Topology for Efficient Operation of High Voltage Battery Packs in Li-Ion Based Energy Storage Systems: Switched (Flying) DC/DC Converter," Energies, MDPI, vol. 16(15), pages 1-22, July.
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    4. Zhang, Caiping & Jiang, Yan & Jiang, Jiuchun & Cheng, Gong & Diao, Weiping & Zhang, Weige, 2017. "Study on battery pack consistency evolutions and equilibrium diagnosis for serial- connected lithium-ion batteries," Applied Energy, Elsevier, vol. 207(C), pages 510-519.
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