Maximum Efficiency Conditions Satisfying Power Regulation Constraints in Multiple-Receivers Wireless Power Transfer

Won Lee, Woochan Lee and Dukju Ahn
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Won Lee: Department of Electrical Engineering, Incheon National University, Incheon 22012, Korea
Woochan Lee: Department of Electrical Engineering, Incheon National University, Incheon 22012, Korea
Dukju Ahn: Department of Electrical Engineering, Incheon National University, Incheon 22012, Korea

Energies, 2022, vol. 15, issue 10, 1-9

Abstract: We propose the conditions for maximum overall efficiency at the constraint of satisfying asymmetric load power requirements for each receiver, for multiple-receivers wireless power transfer. Previously, the limitation of multiple-receiver analysis was that only the efficiency was maximized, whereas the requirements of load power were neglected. In many cases, conventional efficiency maximization assigns insufficient power to receivers far from the transmitter, while supplying excessive power to receivers near the transmitter. To resolve this limitation, we maximize the efficiency at the constraints of specified load power for each receiver. The proposed closed-form equation provides an optimum TX coil current amplitude, and the optimum load resistances of each receiver, to achieve the maximum efficiency at the load power regulation.

Keywords: wireless power transfer; magnetic resonance; optimization (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: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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