Determination of Reverse-Current Coil Turns Layout to Mitigate Over-Coupling in Resonant Inductive Power Transfer Links

The transfer efficiency of two-coil resonant inductive power transfer links is known to significantly degrade with a reduction of the coil distance, due to an over-coupling at shorter distances. In this work, a simple technique is introduced to determine the spatial layout of reverse-current coil tu...

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Bibliographic Details
Published inApplied Computational Electromagnetics Society journal Vol. 32; no. 1; p. 37
Main Authors Eteng, Akaa A, Rahim, Sharul K A, Leow, Chee Y, Chew, Beng W, Vandenbosch, Guy A E
Format Journal Article
LanguageEnglish
Published Pisa River Publishers 01.01.2017
Subjects
Coils
Coupling
Design parameters
Design techniques
Efficiency
Layouts
Power transfer
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Summary:The transfer efficiency of two-coil resonant inductive power transfer links is known to significantly degrade with a reduction of the coil distance, due to an over-coupling at shorter distances. In this work, a simple technique is introduced to determine the spatial layout of reverse-current coil turns, which suppresses the overcoupling- induced transfer efficiency drop. By employing the spatial layout of reverse-current turns as a design parameter, the proposed method provides more generality in its implementation compared to other reverse-current turn methods. Simulation and experimental results validate the method, suggesting a potential for distanceinsensitive implementations.
ISSN:1054-4887
1943-5711