High Efficiency with Small Coils Area Ratio of Magnetic Resonant Wireless Power Transfer System

Thabat Thabet and John Woods
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Thabat Thabet: School of Computer Science and Electronic Engineering, Essex University, Wivenhoe Park
John Woods: School of Computer Science and Electronic Engineering, Essex University, Wivenhoe Park

European Journal of Electrical Engineering and Computer Science, 2018, vol. 2, issue 6

Abstract: Wireless power transfer using magnetic resonance requires cutting flux lines generated from the transmitter coil by the receiver coil. This letter shows that an exact one to one coil area ratio or CAR (i.e. primary relative to secondary) is not a pre-condition to obtain high efficiency. It is also shown that high efficiency can be achieved for relatively small CARs by adjustment of the turns ratio. We go on to show that it is possible to achieve a higher energy efficiency than the coil area ratio and the associated flux cut would dictate.

Keywords: Coil area ratio; High efficiency; Magnetic resonant; Mutual inductance; Wireless power transfer (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:epw:ejece0:v:2:y:2018:i:6:id:19038

DOI: 10.24018/ejece.2018.2.6.38

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