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Shielded Capacitive Power Transfer (S-CPT) without Secondary Side Inductors

Author

Listed:
  • Suziana Ahmad

    (Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan
    Faculty of Electrical and Electronic Engineering Technology, Universiti Teknikal Malaysia Melaka, Malacca 76100, Malaysia)

  • Aam Muharam

    (Research Centre for Electrical Power and Mechatronics, Indonesian Institute of Sciences, Bandung 40135, Indonesia)

  • Reiji Hattori

    (Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan)

  • Anyu Uezu

    (Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580, Japan)

  • Tarek M. Mostafa

    (CEMSE Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia)

Abstract

In this study, we propose a four-plate structure with two shielding plates to produce shielded capacitive power transfer (S-CPT) at an operating frequency of 6.78 MHz for a 10 W system. By eliminating the inductors at the secondary side to form an asymmetrical topology, an S-CPT system was developed with a class-E power amplifier. Using MATLAB software, analysis was performed to obtain the parameters in the S-CPT system regarding resonance and impedance matching, and the proposed coupler structure was investigated through electric field simulation. The shield plate voltage stability was also investigated by analysing both the simulation and hardware experiment results. A prototype of S-CPT was established to validate the analysis results and to demonstrate the voltage at the shield plate of the proposed coupler structure. The experimental results are in good agreement with the simulation results. The proposed S-CPT exhibits an AC–AC efficiency of 84%, with a 56% voltage ground stability reduction because of implementing a balun.

Suggested Citation

  • Suziana Ahmad & Aam Muharam & Reiji Hattori & Anyu Uezu & Tarek M. Mostafa, 2021. "Shielded Capacitive Power Transfer (S-CPT) without Secondary Side Inductors," Energies, MDPI, vol. 14(15), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4590-:d:604048
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    References listed on IDEAS

    as
    1. Suziana Ahmad & Reiji Hattori & Aam Muharam, 2021. "Generalized Circuit Model of Shielded Capacitive Power Transfer," Energies, MDPI, vol. 14(10), pages 1-19, May.
    2. Aam Muharam & Suziana Ahmad & Reiji Hattori, 2020. "Scaling-Factor and Design Guidelines for Shielded-Capacitive Power Transfer," Energies, MDPI, vol. 13(16), pages 1-22, August.
    3. Fabio Corti & Alberto Reatti & Ya-Hui Wu & Dariusz Czarkowski & Salvatore Musumeci, 2021. "Zero Voltage Switching Condition in Class-E Inverter for Capacitive Wireless Power Transfer Applications," Energies, MDPI, vol. 14(4), pages 1-20, February.
    Full references (including those not matched with items on IDEAS)

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