IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Regular Section
Experimental Evaluation of Maximum Achievable Efficiency for Multiple-Receiver Inductive Power Transfer Systems
Reona SUGIYAMAQuang-Thang DUONGMinoru OKADA
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2018 Volume E101.A Issue 11 Pages 1861-1868

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Abstract

Optimal loads and maximum achievable efficiency for multiple-receiver inductive power transfer (IPT) system have been formulated by theoretical studies in literatures. This paper presents extended analysis on system behavior at optimal load condition and extensive S-parameter evaluation to validate the formulas. Our results confirm that at the optimal load condition, the system is in a resonance state; the impact of cross-coupling among receivers is completely mitigated; and the efficiency reaches its maximum expressed by an efficiency angle tangent, in an manner analogous to the well-known kQ-theory for single-receiver IPT. Our contributions do not lie in practical applications of multiple-receiver IPT but in establishing principles for design and benchmarking the system.

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© 2018 The Institute of Electronics, Information and Communication Engineers
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