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Multi-Port Zero-Current Switching Switched-Capacitor Converters for Battery Management Applications

Author

Listed:
  • Yat Chi Fong

    (Power Electronics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • Ka Wai Eric Cheng

    (Power Electronics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • S. Raghu Raman

    (Power Electronics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • Xiaolin Wang

    (Power Electronics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

Abstract

A novel implementation of multi-port zero-current switching (ZCS) switched-capacitor (SC) converters for battery management applications is presented. In addition to the auto-balancing feature offered by the SC technique, the proposed SC converter permits individual control of the charging or discharging current of the series-connected energy storage elements, such as the battery or super-capacitor cells. This approach enables advanced state control and accelerates the equalizing process by coordinated operation with the battery management system (BMS) and an adjustable voltage source, which can be implemented by a DC-DC converter interfaced to the energy storage string. Different configurations, including the single-input multi-output (SIMO), multi-input single-output (MISO) SC converters, and the corresponding altered circuits for string-to-cells, cells-to-string, as well as cells-to-cells equalizers, are discussed with a circuit analysis and derivation of the associated mathematical representation. The simulation study and experimental results indicated a significant increase in the balancing speed with the presence of BMS and closed-loop control of cell currents.

Suggested Citation

  • Yat Chi Fong & Ka Wai Eric Cheng & S. Raghu Raman & Xiaolin Wang, 2018. "Multi-Port Zero-Current Switching Switched-Capacitor Converters for Battery Management Applications," Energies, MDPI, vol. 11(8), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:8:p:1934-:d:159830
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    References listed on IDEAS

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    1. Ricardo Velho & Miguel Beirão & Maria Do Rosário Calado & José Pombo & João Fermeiro & Sílvio Mariano, 2017. "Management System for Large Li-Ion Battery Packs with a New Adaptive Multistage Charging Method," Energies, MDPI, vol. 10(5), pages 1-21, May.
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    4. Xiaolin Wang & Ka Wai Eric Cheng & Yat Chi Fong, 2018. "Non-Equal Voltage Cell Balancing for Battery and Super-Capacitor Source Package Management System Using Tapped Inductor Techniques," Energies, MDPI, vol. 11(5), pages 1-12, April.
    5. Yunlong Shang & Qi Zhang & Naxin Cui & Chenghui Zhang, 2017. "A Cell-to-Cell Equalizer Based on Three-Resonant-State Switched-Capacitor Converters for Series-Connected Battery Strings," Energies, MDPI, vol. 10(2), pages 1-15, February.
    6. Xintian Liu & Yafei Sun & Yao He & Xinxin Zheng & Guojian Zeng & Jiangfeng Zhang, 2017. "Battery Equalization by Fly-Back Transformers with Inductance, Capacitance and Diode Absorbing Circuits," Energies, MDPI, vol. 10(10), pages 1-16, September.
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    Cited by:

    1. Xiaolin Wang & Ka Wai Eric Cheng & Yat Chi Fong, 2019. "Zero Current Switching Switched-Capacitors Balancing Circuit for Energy Storage Cell Equalization and Its Associated Hybrid Circuit with Classical Buck-Boost," Energies, MDPI, vol. 12(14), pages 1-15, July.
    2. Cuidong Xu & Ka Wai Eric Cheng, 2022. "Topology and Formation of Current Source Step Down Resonant Switched Inductor Converters," Energies, MDPI, vol. 15(5), pages 1-20, February.
    3. Shixin Song & Feng Xiao & Silun Peng & Chuanxue Song & Yulong Shao, 2018. "A High-Efficiency Bidirectional Active Balance for Electric Vehicle Battery Packs Based on Model Predictive Control," Energies, MDPI, vol. 11(11), pages 1-24, November.

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