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 c...
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| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
Applied Computational Electromagnetics Society
2017
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/66116/ http://www.aces-society.org/search.php?vol=32&no=1&type=2 |
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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 over- coupling-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 distance- insensitive implementations. |
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