Wireless power transfer via strongly coupled magnetic resonances |
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Authors: | Kurs André Karalis Aristeidis Moffatt Robert Joannopoulos J D Fisher Peter Soljacic Marin |
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Institution: | Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. akurs@mit.edu |
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Abstract: | Using self-resonant coils in a strongly coupled regime, we experimentally demonstrated efficient nonradiative power transfer over distances up to 8 times the radius of the coils. We were able to transfer 60 watts with approximately 40% efficiency over distances in excess of 2 meters. We present a quantitative model describing the power transfer, which matches the experimental results to within 5%. We discuss the practical applicability of this system and suggest directions for further study. |
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