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Article: A methodology for making a three-coil wireless power transfer system more energy efficient than a two-coil counterpart for extended transfer distance

TitleA methodology for making a three-coil wireless power transfer system more energy efficient than a two-coil counterpart for extended transfer distance
Authors
KeywordsInductive power transfer
Contactless power
Planar wireless charging technology
Wireless power transfer (WPT)
Issue Date2015
Citation
IEEE Transactions on Power Electronics, 2015, v. 30, n. 2, p. 933-942 How to Cite?
Abstract© 2014 IEEE. A new methodology for ensuring that a three-coil wireless power transfer system is more energy efficient than a two-coil counterpart is presented in this paper. The theoretical proof and the conditions for meeting the objective are derived and practically verified in a practical prototype. The key features of the magnetic design are to: 1) shift the current stress from the primary driving circuit to the relay resonator; and 2) generate a large relay current for maximizing magnetic coupling with the receiver coil for efficient power transfer. Consequently, the current rating and cost of the driving circuit can be reduced and the overall quality factor and system energy efficiency are improved. This approach utilizes the combined advantages of the maximum efficiency principle and the use of relay resonator to overcome the energy efficiency problem for applications with extended energy transfer distances.
Persistent Identifierhttp://hdl.handle.net/10722/225063
ISSN
2015 Impact Factor: 4.953
2015 SCImago Journal Rankings: 3.005
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhong, W. X.-
dc.contributor.authorZhang, C.-
dc.contributor.authorLiu, Xun-
dc.contributor.authorHui, S. Y Ron-
dc.date.accessioned2016-04-18T11:16:40Z-
dc.date.available2016-04-18T11:16:40Z-
dc.date.issued2015-
dc.identifier.citationIEEE Transactions on Power Electronics, 2015, v. 30, n. 2, p. 933-942-
dc.identifier.issn0885-8993-
dc.identifier.urihttp://hdl.handle.net/10722/225063-
dc.description.abstract© 2014 IEEE. A new methodology for ensuring that a three-coil wireless power transfer system is more energy efficient than a two-coil counterpart is presented in this paper. The theoretical proof and the conditions for meeting the objective are derived and practically verified in a practical prototype. The key features of the magnetic design are to: 1) shift the current stress from the primary driving circuit to the relay resonator; and 2) generate a large relay current for maximizing magnetic coupling with the receiver coil for efficient power transfer. Consequently, the current rating and cost of the driving circuit can be reduced and the overall quality factor and system energy efficiency are improved. This approach utilizes the combined advantages of the maximum efficiency principle and the use of relay resonator to overcome the energy efficiency problem for applications with extended energy transfer distances.-
dc.languageeng-
dc.relation.ispartofIEEE Transactions on Power Electronics-
dc.subjectInductive power transfer-
dc.subjectContactless power-
dc.subjectPlanar wireless charging technology-
dc.subjectWireless power transfer (WPT)-
dc.titleA methodology for making a three-coil wireless power transfer system more energy efficient than a two-coil counterpart for extended transfer distance-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TPEL.2014.2312020-
dc.identifier.scopuseid_2-s2.0-84907976705-
dc.identifier.hkuros232016-
dc.identifier.volume30-
dc.identifier.issue2-
dc.identifier.spage933-
dc.identifier.epage942-
dc.identifier.isiWOS:000343041300036-

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