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Optimal Terminations for a Single-Input Multiple-Output Resonant Inductive WPT Link

Author

Listed:
  • Giuseppina Monti

    (Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy
    These authors contributed equally to this work.)

  • Mauro Mongiardo

    (Department of Engineering, University of Perugia, 06123 Perugia, Italy
    These authors contributed equally to this work.)

  • Ben Minnaert

    (Department of Industrial Science and Technology, Odisee University College of Applied Sciences, 9000 Ghent, Belgium)

  • Alessandra Costanzo

    (Department of Electrical, Electronic and Information Engineering Guglielmo Marconi, University of Bologna, 40126 Bologna, Italy)

  • Luciano Tarricone

    (Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy)

Abstract

This paper analyzes a resonant inductive wireless power transfer link using a single transmitter and multiple receivers. The link is described as an ( N + 1 ) –port network and the problem of efficiency maximization is formulated as a generalized eigenvalue problem. It is shown that the desired solution can be derived through simple algebraic operations on the impedance matrix of the link. The analytical expressions of the loads and the generator impedances that maximize the efficiency are derived and discussed. It is demonstrated that the maximum realizable efficiency of the link does not depend on the coupling among the receivers that can be always compensated. Circuital simulation results validating the presented theory are reported and discussed.

Suggested Citation

  • Giuseppina Monti & Mauro Mongiardo & Ben Minnaert & Alessandra Costanzo & Luciano Tarricone, 2020. "Optimal Terminations for a Single-Input Multiple-Output Resonant Inductive WPT Link," Energies, MDPI, vol. 13(19), pages 1-21, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5157-:d:423359
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    References listed on IDEAS

    as
    1. Mahmoud Wagih & Abiodun Komolafe & Bahareh Zaghari, 2020. "Separation-Independent Wearable 6.78 MHz Near-Field Radiative Wireless Power Transfer using Electrically Small Embroidered Textile Coils," Energies, MDPI, vol. 13(3), pages 1-14, January.
    2. Chengxin Luo & Dongyuan Qiu & Manhao Lin & Bo Zhang, 2020. "Circuit Model and Analysis of Multi-Load Wireless Power Transfer System Based on Parity-Time Symmetry," Energies, MDPI, vol. 13(12), pages 1-18, June.
    3. Weikun Cai & Dianguang Ma & Houjun Tang & Xiaoyang Lai & Xin Liu & Longzhao Sun, 2018. "Highly Efficient Target Power Control for Two-Receiver Wireless Power Transfer Systems," Energies, MDPI, vol. 11(10), pages 1-17, October.
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    Cited by:

    1. Simone Fiori & Jing Wang, 2023. "External Identification of a Reciprocal Lossy Multiport Circuit under Measurement Uncertainties by Riemannian Gradient Descent," Energies, MDPI, vol. 16(6), pages 1-31, March.
    2. Giuseppina Monti & Mauro Mongiardo & Ben Minnaert & Alessandra Costanzo & Luciano Tarricone, 2021. "Multiple Input Multiple Output Resonant Inductive WPT Link: Optimal Terminations for Efficiency Maximization," Energies, MDPI, vol. 14(8), pages 1-25, April.

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