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Energies 2017, 10(4), 498; doi:10.3390/en10040498

Combined Conformal Strongly-Coupled Magnetic Resonance for Efficient Wireless Power Transfer

1
School of Engineering, Manchester Metropolitan University, Manchester M1 5GD, UK
2
Nokia Bell Labs Copernicuslaan 50, 2018 Antwerp, Belgium
*
Author to whom correspondence should be addressed.
Academic Editor: Hongjian Sun
Received: 7 December 2016 / Revised: 31 March 2017 / Accepted: 4 April 2017 / Published: 7 April 2017
(This article belongs to the Special Issue Wireless Power Transfer 2016)
View Full-Text   |   Download PDF [5548 KB, uploaded 7 April 2017]   |  

Abstract

This paper proposes a hybrid circuit between a conformal strongly-coupled magnetic resonance (CSCMR) and a strongly-coupled magnetic resonance (SCMR), for better wireless power transmission (WPT). This combination promises to enhance the flexibility of the proposed four-loop WPT system. The maximum efficiency at various distances is achieved by combining coupling-matching between the source and transmitting coils along with the coupling factor between the transmitting and receiving coils. Furthermore, the distance between transmitting and receiving coils is investigated along with the distance relationship between the source loop and transmission coil, in order to achieve the maximum efficiency of the proposed hybrid WPT system. The results indicate that the proposed approach can be effectively employed at distances comparatively smaller than the maximum distance without frequency matching. The achievable efficiency can be as high as 84% for the whole working range of the transmitter. In addition, the proposed hybrid system allows more spatial freedom compared to existing chargers. View Full-Text
Keywords: conformal strongly-coupled magnetic resonance (CSCMR); strongly-coupled magnetic resonance (SCMR); efficiency; flexibility; matching; wireless power transfer (WPT) conformal strongly-coupled magnetic resonance (CSCMR); strongly-coupled magnetic resonance (SCMR); efficiency; flexibility; matching; wireless power transfer (WPT)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rozman, M.; Fernando, M.; Adebisi, B.; Rabie, K.M.; Kharel, R.; Ikpehai, A.; Gacanin, H. Combined Conformal Strongly-Coupled Magnetic Resonance for Efficient Wireless Power Transfer. Energies 2017, 10, 498.

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