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Multiple Input Multiple Output Resonant Inductive WPT Link: Optimal Terminations for Efficiency Maximization

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

    (College of Applied Sciences, Odisee University, 9000 Ghent, Belgium)

  • Alessandra Costanzo

    (Department of Electrical, University of Bologna, 40126 Bologna, Italy)

  • Luciano Tarricone

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

Abstract

In this paper a general-purpose procedure for optimizing a resonant inductive wireless power transfer link adopting a multiple-input-multiple-output (MIMO) configuration is presented. The wireless link is described in a general–purpose way as a multi-port electrical network that can be the result of either analytical calculations, full–wave simulations, or measurements. An eigenvalue problem is then derived to determine the link optimal impedance terminations for efficiency maximization. A step-by-step procedure is proposed to solve the eigenvalue problem using a computer algebra system, it provides the configuration of the link, optimal sources, and loads for maximizing the efficiency. The main advantage of the proposed approach is that it is general: it is valid for any strictly–passive multi–port network and is therefore applicable to any wireless power transfer (WPT) link. To validate the presented theory, an example of application is illustrated for a link using three transmitters and two receivers whose impedance matrix was derived from full-wave simulations.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:8:p:2194-:d:536074
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    References listed on IDEAS

    as
    1. Yang Li & Kai Song & Zhenjie Li & Jinhai Jiang & Chunbo Zhu, 2018. "Optimal Efficiency Tracking Control Scheme Based on Power Stabilization for a Wireless Power Transfer System with Multiple Receivers," Energies, MDPI, vol. 11(5), pages 1-18, May.
    2. 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.
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