Advanced computational tools for wound core distribution transformer no-load analysis

Kefalas, TD; Kladas, AG

dc.contributor.author	Kefalas, TD	en
dc.contributor.author	Kladas, AG	en
dc.date.accessioned	2014-03-01T02:07:35Z
dc.date.available	2014-03-01T02:07:35Z
dc.date.issued	2012	en
dc.identifier.issn	03321649	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29586
dc.subject	Electromagnetic analysis	en
dc.subject	Finite element methods	en
dc.subject	Magnetic cores	en
dc.subject	Numerical analysis	en
dc.subject	Power transformers	en
dc.subject.other	3-D FE analysis	en
dc.subject.other	3D Finite element	en
dc.subject.other	Computational costs	en
dc.subject.other	Computational tools	en
dc.subject.other	Design/methodology/approach	en
dc.subject.other	Distribution transformer	en
dc.subject.other	Electrical steels	en
dc.subject.other	Electromagnetic analysis	en
dc.subject.other	Experimental analysis	en
dc.subject.other	FE method	en
dc.subject.other	Finite Element	en
dc.subject.other	Flux density distribution	en
dc.subject.other	No-load loss	en
dc.subject.other	Single valued functions	en
dc.subject.other	Wound core	en
dc.subject.other	Anisotropy	en
dc.subject.other	Computational electromagnetics	en
dc.subject.other	Cost benefit analysis	en
dc.subject.other	Finite element method	en
dc.subject.other	Laminated composites	en
dc.subject.other	Laminating	en
dc.subject.other	Magnetic cores	en
dc.subject.other	Numerical analysis	en
dc.subject.other	Power transformers	en
dc.subject.other	Silicon steel	en
dc.subject.other	Three dimensional	en
dc.title	Advanced computational tools for wound core distribution transformer no-load analysis	en
heal.type	journalArticle	en
heal.identifier.primary	10.1108/03321641211200653	en
heal.identifier.secondary	http://dx.doi.org/10.1108/03321641211200653	en
heal.publicationDate	2012	en
heal.abstract	Purpose - This paper aims to present an accurate representation of laminated wound cores with a low computational cost using 2D and 3D finite element (FE) method. Design/methodology/approach - The authors developed an anisotropy model in order to model laminated wound cores. The anisotropy model was integrated to the 2D and 3D FE method. A comparison between 2D and 3D FE techniques was carried out. FE techniques were validated by experimental analysis. Findings - In the case of no-load operation of wound core transformers both 2D and 3D FE techniques yield the same results. Computed and experimental local flux density distribution and no-load loss agree within 2 per cent to 6 per cent. Originality/value - The originality of the paper consists in the development of an anisotropy model specifically formulated for laminated wound cores, and in the effective representation of electrical steels using a composite single-valued function. By using the aforementioned techniques, the FE computational cost is minimised and the 3D FE analysis of wound cores is rendered practical. © 2012 Emerald Group Publishing Limited. All rights reserved.	en
heal.journalName	COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering	en
dc.identifier.doi	10.1108/03321641211200653	en
dc.identifier.volume	31	en
dc.identifier.issue	2	en
dc.identifier.spage	682	en
dc.identifier.epage	691	en