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Conference Paper: Extended theory on the inductance calculation of planar spiral windings including the effect of double-layer electromagnetic shield

TitleExtended theory on the inductance calculation of planar spiral windings including the effect of double-layer electromagnetic shield
Authors
KeywordsDouble-layer shield
Impedance formulas
Planar spiral inductance
Issue Date2007
PublisherIEEE
Citation
Pesc Record - Ieee Annual Power Electronics Specialists Conference, 2007, p. 3022-3028 How to Cite?
AbstractRecent progress on wireless planar battery charging platform highlights a requirement that the platform must be shielded underneath so that the electromagnetic (EM) flux will not leak through the bottom of the charging platform. The presence of the EM shield will inevitably alter the flux distribution and thus the inductance of the planar windings. In this paper, a theory of calculating inductance of spiral windings is extended to determine the inductance of planar spiral windings shielded by a double-layer planar EM shield. With the generalized equations, the impedance of the planar spiral windings on double-layer shielding substrate and the optimal thickness of shielding materials can be calculated accurately without using time-consuming finite-element method. Therefore, the influence of the double-layer electromagnetic shield on the inductance of the planar spiral windings can be analyzed. Simulations and measurements have been carried out for several shielding plates with different permeability, conductivity and thickness. Both of the simulations and measurements of the winding inductance agree well with the extended theory. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/136947
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorSu, YPen_HK
dc.contributor.authorLiu, Xen_HK
dc.contributor.authorHui, SYen_HK
dc.date.accessioned2011-07-29T02:13:43Z-
dc.date.available2011-07-29T02:13:43Z-
dc.date.issued2007en_HK
dc.identifier.citationPesc Record - Ieee Annual Power Electronics Specialists Conference, 2007, p. 3022-3028en_HK
dc.identifier.issn0275-9306en_HK
dc.identifier.urihttp://hdl.handle.net/10722/136947-
dc.description.abstractRecent progress on wireless planar battery charging platform highlights a requirement that the platform must be shielded underneath so that the electromagnetic (EM) flux will not leak through the bottom of the charging platform. The presence of the EM shield will inevitably alter the flux distribution and thus the inductance of the planar windings. In this paper, a theory of calculating inductance of spiral windings is extended to determine the inductance of planar spiral windings shielded by a double-layer planar EM shield. With the generalized equations, the impedance of the planar spiral windings on double-layer shielding substrate and the optimal thickness of shielding materials can be calculated accurately without using time-consuming finite-element method. Therefore, the influence of the double-layer electromagnetic shield on the inductance of the planar spiral windings can be analyzed. Simulations and measurements have been carried out for several shielding plates with different permeability, conductivity and thickness. Both of the simulations and measurements of the winding inductance agree well with the extended theory. © 2007 IEEE.en_HK
dc.languageengen_US
dc.publisherIEEEen_US
dc.relation.ispartofPESC Record - IEEE Annual Power Electronics Specialists Conferenceen_HK
dc.subjectDouble-layer shielden_HK
dc.subjectImpedance formulasen_HK
dc.subjectPlanar spiral inductanceen_HK
dc.titleExtended theory on the inductance calculation of planar spiral windings including the effect of double-layer electromagnetic shielden_HK
dc.typeConference_Paperen_HK
dc.identifier.emailHui, SY:ronhui@eee.hku.hken_HK
dc.identifier.authorityHui, SY=rp01510en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/PESC.2007.4342506en_HK
dc.identifier.scopuseid_2-s2.0-48349146176en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-48349146176&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage3022en_HK
dc.identifier.epage3028en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridSu, YP=24468926200en_HK
dc.identifier.scopusauthoridLiu, X=24724562000en_HK
dc.identifier.scopusauthoridHui, SY=7202831744en_HK

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