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

Giuseppina Monti, Mauro Mongiardo, Ben Minnaert, Alessandra Costanzo and Luciano Tarricone
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Giuseppina Monti: Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy
Mauro Mongiardo: Department of Engineering, University of Perugia, 06123 Perugia, Italy
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

Energies, 2020, vol. 13, issue 19, 1-21

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.

Keywords: resonant; wireless power transfer; inductive coupling; optimal load; single-input multiple-output; power gain (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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