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Increasing Efficiency of a Wireless Energy Transfer System by Spatial Translational Transformation
KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknisk teori och konstruktion.ORCID-id: 0000-0002-3401-1125
2018 (engelsk)Inngår i: IEEE transactions on power electronics, ISSN 0885-8993, E-ISSN 1941-0107, Vol. 33, nr 4, s. 3325-3332Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A magnetic translational projector (MTP) designed by transformation optics is applied to improve energy transfer efficiency in a wireless power transfer (WPT) system. Our numerical simulation results showtheMTP can greatly enhance energy transfer efficiency (e.g., nearly two orders, compared to the case without our MTP) in the WPT system, which is much larger than that of a previous method (i.e., using magnetic super-lens). A 3-D reduced MTPcomposed of layered isotropicmagnetic materials is designed, whose performance is verified by our 3-D numerical simulation in 10 MHz. The influence of loss in metamaterial on the performance of the proposed MTP is also studied, which shows that the MTP can still enhance energy transfer efficiency when loss exists. Further simulation is also carried out to show that the function of the MTP is not sensitive to large perturbation. Finally, detailed experimental suggestion for implementing the simplified MTP, which is composed of layered medium is given and then verified by our numerical simulation.

sted, utgiver, år, opplag, sider
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2018. Vol. 33, nr 4, s. 3325-3332
Emneord [en]
Magnetic device, metamaterial, transformation optics, wireless energy transfer
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Identifikatorer
URN: urn:nbn:se:kth:diva-222165DOI: 10.1109/TPEL.2017.2703591ISI: 000422933400050Scopus ID: 2-s2.0-85040778782OAI: oai:DiVA.org:kth-222165DiVA, id: diva2:1180293
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QC 20180205

Tilgjengelig fra: 2018-02-05 Laget: 2018-02-05 Sist oppdatert: 2018-02-05bibliografisk kontrollert

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