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Article: On the relationship of quality factor and hollow winding structure of coreless printed spiral winding (CPSW) inductor
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TitleOn the relationship of quality factor and hollow winding structure of coreless printed spiral winding (CPSW) inductor
 
AuthorsSu, Y3
Liu, X1
Lee, CK2
Hui, SY2 4
 
KeywordsPlanar Magnetics
Quality Factor
 
Issue Date2012
 
PublisherIEEE.
 
CitationIEEE Transactions on Power Electronics, 2012, v. 27 n. 6, p. 3050-3056 [How to Cite?]
DOI: http://dx.doi.org/10.1109/TPEL.2011.2174654
 
AbstractThe principle of using hollow spiral winding is not novel, but the study on this topic is far from complete. In this paper, how hollow the central region of the coreless printed spiral winding (CPSW) inductor should be for a given footprint area in order to achieve the maximal quality factor Q max and to maintain high inductance value is explored. A hollow factor based on the ratio of the inner hollow radius and the outer winding radius τ = R in/R out, is proposed as for optimization and quantifying how hollow a spiral winding is. The relationship between τ and Q max, which depends on the operating frequency and the dimensional parameters of CPSW inductor, is established. For a specific operating frequency, it is discovered that if the conductor width is comparable with the skin depth, or the conductors are placed relatively far away from each others, the hollow design of the CPSW inductor has little improvement on Q but reduces the inductance. If the conductor width is much larger than the skin depth and the conductors are closely placed, the hollow spiral design is recommended. The optimal range of τ with which the Q max can be achieved is found to be around 0.45-0.55. © 2006 IEEE.
 
ISSN0885-8993
2013 Impact Factor: 5.726
2013 SCImago Journal Rankings: 2.866
 
DOIhttp://dx.doi.org/10.1109/TPEL.2011.2174654
 
ISI Accession Number IDWOS:000302184600034
Funding AgencyGrant Number
Hong Kong Research Grant CouncilHKU114410
Funding Information:

This work was supported by the Hong Kong Research Grant Council under Project HKU114410. Recommended for publication by Associate Editor R.-L. Lin.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorSu, Y
 
dc.contributor.authorLiu, X
 
dc.contributor.authorLee, CK
 
dc.contributor.authorHui, SY
 
dc.creatorjt 130319
 
dc.date.accessioned2012-08-08T08:35:08Z
 
dc.date.available2012-08-08T08:35:08Z
 
dc.date.issued2012
 
dc.description.abstractThe principle of using hollow spiral winding is not novel, but the study on this topic is far from complete. In this paper, how hollow the central region of the coreless printed spiral winding (CPSW) inductor should be for a given footprint area in order to achieve the maximal quality factor Q max and to maintain high inductance value is explored. A hollow factor based on the ratio of the inner hollow radius and the outer winding radius τ = R in/R out, is proposed as for optimization and quantifying how hollow a spiral winding is. The relationship between τ and Q max, which depends on the operating frequency and the dimensional parameters of CPSW inductor, is established. For a specific operating frequency, it is discovered that if the conductor width is comparable with the skin depth, or the conductors are placed relatively far away from each others, the hollow design of the CPSW inductor has little improvement on Q but reduces the inductance. If the conductor width is much larger than the skin depth and the conductors are closely placed, the hollow spiral design is recommended. The optimal range of τ with which the Q max can be achieved is found to be around 0.45-0.55. © 2006 IEEE.
 
dc.description.naturepublished_or_final_version
 
dc.identifier.citationIEEE Transactions on Power Electronics, 2012, v. 27 n. 6, p. 3050-3056 [How to Cite?]
DOI: http://dx.doi.org/10.1109/TPEL.2011.2174654
 
dc.identifier.doihttp://dx.doi.org/10.1109/TPEL.2011.2174654
 
dc.identifier.epage3056
 
dc.identifier.hkuros205581
 
dc.identifier.isiWOS:000302184600034
Funding AgencyGrant Number
Hong Kong Research Grant CouncilHKU114410
Funding Information:

This work was supported by the Hong Kong Research Grant Council under Project HKU114410. Recommended for publication by Associate Editor R.-L. Lin.

 
dc.identifier.issn0885-8993
2013 Impact Factor: 5.726
2013 SCImago Journal Rankings: 2.866
 
dc.identifier.issue6
 
dc.identifier.scopuseid_2-s2.0-84859090171
 
dc.identifier.spage3050
 
dc.identifier.urihttp://hdl.handle.net/10722/155744
 
dc.identifier.volume27
 
dc.languageeng
 
dc.publisherIEEE.
 
dc.publisher.placeUnited States
 
dc.relation.ispartofIEEE Transactions on Power Electronics
 
dc.relation.referencesReferences in Scopus
 
dc.rightsIEEE Transactions on Power Electronics. Copyright © IEEE
 
dc.rights©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
 
dc.subjectPlanar Magnetics
 
dc.subjectQuality Factor
 
dc.titleOn the relationship of quality factor and hollow winding structure of coreless printed spiral winding (CPSW) inductor
 
dc.typeArticle
 
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<description.abstract>The principle of using hollow spiral winding is not novel, but the study on this topic is far from complete. In this paper, how hollow the central region of the coreless printed spiral winding (CPSW) inductor should be for a given footprint area in order to achieve the maximal quality factor Q max and to maintain high inductance value is explored. A hollow factor based on the ratio of the inner hollow radius and the outer winding radius &#964; = R in/R out, is proposed as for optimization and quantifying how hollow a spiral winding is. The relationship between &#964; and Q max, which depends on the operating frequency and the dimensional parameters of CPSW inductor, is established. For a specific operating frequency, it is discovered that if the conductor width is comparable with the skin depth, or the conductors are placed relatively far away from each others, the hollow design of the CPSW inductor has little improvement on Q but reduces the inductance. If the conductor width is much larger than the skin depth and the conductors are closely placed, the hollow spiral design is recommended. The optimal range of &#964; with which the Q max can be achieved is found to be around 0.45-0.55. &#169; 2006 IEEE.</description.abstract>
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Author Affiliations
  1. ConvenientPower HK Limited
  2. The University of Hong Kong
  3. Virginia Polytechnic Institute and State University
  4. Imperial College London