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Implantable Magnetic Resonance Wireless Power Transfer System Based on 3D Flexible Coils

Author

Listed:
  • Dongdong Xu

    (School of Electronic and Information Engineering, Beijing Jiao Tong University, Beijing 100044, China)

  • Qian Zhang

    (School of Electronic and Information Engineering, Beijing Jiao Tong University, Beijing 100044, China)

  • Xiuhan Li

    (School of Electronic and Information Engineering, Beijing Jiao Tong University, Beijing 100044, China)

Abstract

A magnetic resonance wireless power transfer system based on flexible 3D dual-coil is proposed and implemented in this paper. Firstly, a magnetic coupling resonant circuit model based on dual-coil is established, and the analysis indicates that enlarging the coil inductance and quality factor can effectively improve the transfer efficiency and performance. The coil parametric model is created by HFSS (High Frequency Structure Simulator), the effects of structural parameters on the coil inductance and quality factor are analyzed, and the optimized coil structure parameters are determined. To achieve maximum power transfer, the coupled resonant model after impedance matching is established and simulated in HFSS, and S 11 reaches −30 dB at 13.56 MHz. Considering the radiation on human tissues, the SAR (Special Absorption Rate) value is evaluated simultaneously. To confirm the validity of the proposed prototype, the efficient wireless power transfer system composed of two flexible and biocompatible coils with 10 mm radius has been verified by the experimental measurements, and measure results show that the output power is 70 mW, when the transfer distance is 6 mm, the input power is 200 mW, and the maximum transfer efficiency is 35%.

Suggested Citation

  • Dongdong Xu & Qian Zhang & Xiuhan Li, 2020. "Implantable Magnetic Resonance Wireless Power Transfer System Based on 3D Flexible Coils," Sustainability, MDPI, vol. 12(10), pages 1-17, May.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:10:p:4149-:d:360128
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    Cited by:

    1. Nadir Benalia & Kouider Laroussi & Idriss Benlaloui & Abdellah Kouzou & Abed-Djebar Bensalah & Ralph Kennel & Mohamed Abdelrahem, 2023. "Optimized Power Pads for Charging Electric Vehicles Based on a New Rectangular Spiral Shape Design," Sustainability, MDPI, vol. 15(2), pages 1-14, January.

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