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Active Shielding Design and Optimization of a Wireless Power Transfer (WPT) System for Automotive

Author

Listed:
  • Silvano Cruciani

    (Department of Electrical Engineering and Automation, Sapienza University of Rome, 00185 Rome, Italy)

  • Tommaso Campi

    (Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy)

  • Francesca Maradei

    (Department of Electrical Engineering and Automation, Sapienza University of Rome, 00185 Rome, Italy)

  • Mauro Feliziani

    (Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy)

Abstract

This study deals with the optimization of a shielding structure composed by multiple active coils for mitigating the magnetic field in an automotive wireless power transfer (WPT) system at 85 kHz. Each active coil is independently powered and the most suitable excitation is obtained by an optimization procedure based on the Gradient Descent algorithm. The proposed procedure is described and applied to shield the magnetic field beside an electric vehicle (EV) equipped with SAE standard coils, during wireless charging. The obtained results show that the magnetic field in the most critical area is significantly reduced (i.e., approximately halved) with a very limited influence on the electrical performances (i.e., WPT efficiency decreases by less than 1 percentage point compared to the case without active shielding).

Suggested Citation

  • Silvano Cruciani & Tommaso Campi & Francesca Maradei & Mauro Feliziani, 2020. "Active Shielding Design and Optimization of a Wireless Power Transfer (WPT) System for Automotive," Energies, MDPI, vol. 13(21), pages 1-12, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:21:p:5575-:d:434474
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    References listed on IDEAS

    as
    1. Valerio De Santis & Tommaso Campi & Silvano Cruciani & Ilkka Laakso & Mauro Feliziani, 2018. "Assessment of the Induced Electric Fields in a Carbon-Fiber Electrical Vehicle Equipped with a Wireless Power Transfer System," Energies, MDPI, vol. 11(3), pages 1-9, March.
    2. Tommaso Campi & Silvano Cruciani & Francesca Maradei & Mauro Feliziani, 2019. "Magnetic Field during Wireless Charging in an Electric Vehicle According to Standard SAE J2954," Energies, MDPI, vol. 12(9), pages 1-24, May.
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    Cited by:

    1. Seongho Woo & Yujun Shin & Changmin Lee & Jaewon Rhee & Jangyong Ahn & Jungick Moon & Seokhyeon Son & Sanguk Lee & Hongseok Kim & Seungyoung Ahn, 2022. "Minimizing Leakage Magnetic Field of Wireless Power Transfer Systems Using Phase Difference Control," Energies, MDPI, vol. 15(21), pages 1-18, November.
    2. Ke Wang & Zhiping Zuo & Lin Sang & Xiaoqiang Zhu, 2022. "Comprehensive Analysis for Electromagnetic Shielding Method Based on Mesh Aluminium Plate for Electric Vehicle Wireless Charging Systems," Energies, MDPI, vol. 15(4), pages 1-16, February.
    3. Haiyue Wang & Lianwen Deng & Heng Luo & Junsa Du & Daohan Zhou & Shengxiang Huang, 2021. "Microwave Wireless Power Transfer System Based on a Frequency Reconfigurable Microstrip Patch Antenna Array," Energies, MDPI, vol. 14(2), pages 1-12, January.
    4. Yujun Shin & Jaehyoung Park & Haerim Kim & Seongho Woo & Bumjin Park & Sungryul Huh & Changmin Lee & Seungyoung Ahn, 2021. "Design Considerations for Adding Series Inductors to Reduce Electromagnetic Field Interference in an Over-Coupled WPT System," Energies, MDPI, vol. 14(10), pages 1-28, May.

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