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Modeling and Characteristic Analysis of Mistuned Series–Series-Compensated Wireless Charging System for EVs

Author

Listed:
  • Weihan Li

    (Department of Vehicle Engineering, Hefei University of Technology, Hefei 230009, China)

  • Yunhan Han

    (Department of Vehicle Engineering, Hefei University of Technology, Hefei 230009, China)

  • Chenxu Li

    (Department of Vehicle Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract

Cumulative mistuning effects in electric vehicle wireless charging systems, arising from component tolerances, coil misalignments, and aging-induced drifts, can significantly degrade system performance. To mitigate this issue, this work establishes an analysis model for mistuned series–series-compensated wireless power transfer (WPT) systems. Through equivalent simplification of mistuned parameters, we systematically examine the effects of compensation capacitances and coil inductances on input impedance, output power, and efficiency in SS-compensated topologies across wide load ranges and different coupling coefficients. Results reveal that transmitter-side parameter deviations exert more pronounced impacts on input impedance and power gain than receiver-side variations. Remarkably, under receiver-side inductance mistuning of −20%, a significant 32° shift in the input impedance angle was observed. Experimental validation on a 500 W prototype confirms ≤5% maximum deviation between calculated and measured values for efficiency, input impedance angle, and power gain.

Suggested Citation

  • Weihan Li & Yunhan Han & Chenxu Li, 2025. "Modeling and Characteristic Analysis of Mistuned Series–Series-Compensated Wireless Charging System for EVs," Energies, MDPI, vol. 18(15), pages 1-26, August.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:15:p:4091-:d:1715841
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    References listed on IDEAS

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    1. Songyan Niu & Qingyu Zhao & Haibiao Chen & Hang Yu & Shuangxia Niu & Linni Jian, 2022. "Underwater Wireless Charging System of Unmanned Surface Vehicles with High Power, Large Misalignment Tolerance and Light Weight: Analysis, Design and Optimization," Energies, MDPI, vol. 15(24), pages 1-19, December.
    2. Kalina Detka & Krzysztof Górecki, 2022. "Wireless Power Transfer—A Review," Energies, MDPI, vol. 15(19), pages 1-21, October.
    3. Saeideh Pahlavan & Mostafa Shooshtari & Shahin Jafarabadi Ashtiani, 2022. "Star-Shaped Coils in the Transmitter Array for Receiver Rotation Tolerance in Free-Moving Wireless Power Transfer Applications," Energies, MDPI, vol. 15(22), pages 1-13, November.
    4. Murugan Venkatesan & Narayanamoorthi Rajamanickam & Pradeep Vishnuram & Mohit Bajaj & Vojtech Blazek & Lukas Prokop & Stanislav Misak, 2022. "A Review of Compensation Topologies and Control Techniques of Bidirectional Wireless Power Transfer Systems for Electric Vehicle Applications," Energies, MDPI, vol. 15(20), pages 1-29, October.
    5. Alicia Triviño & José M. González-González & José A. Aguado, 2021. "Wireless Power Transfer Technologies Applied to Electric Vehicles: A Review," Energies, MDPI, vol. 14(6), pages 1-21, March.
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