Computer aided analysis and design of power transformers

Tsili, MA; Kladas, AG; Georgilakis, PS

dc.contributor.author	Tsili, MA	en
dc.contributor.author	Kladas, AG	en
dc.contributor.author	Georgilakis, PS	en
dc.date.accessioned	2014-03-01T01:28:04Z
dc.date.available	2014-03-01T01:28:04Z
dc.date.issued	2008	en
dc.identifier.issn	0166-3615	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18694
dc.subject	Design automation	en
dc.subject	Finite element method	en
dc.subject	Power transformers	en
dc.subject	Short-circuit impedance	en
dc.subject	Software tools	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.other	Automation	en
dc.subject.other	Computer aided analysis	en
dc.subject.other	Computer aided software engineering	en
dc.subject.other	Finite element method	en
dc.subject.other	Numerical methods	en
dc.subject.other	Operating costs	en
dc.subject.other	Optimization	en
dc.subject.other	Printed circuit design	en
dc.subject.other	Three dimensional	en
dc.subject.other	Computational cost	en
dc.subject.other	Design automation	en
dc.subject.other	Production cost	en
dc.subject.other	Short-circuit impedance	en
dc.subject.other	Power transformers	en
dc.title	Computer aided analysis and design of power transformers	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.compind.2007.09.005	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.compind.2007.09.005	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	In this paper, an integrated, three-dimensional, finite element package for the analysis and design of power transformers is developed, requiring no prior user experience in numerical methods and magnetic field simulation. The package consists of an automated pre-processor, magnetostatic solver and post-processor. High accuracy, low computational cost, minimization of user interaction and functional interface are the main advantages of the software, rendering it a powerful computational too] for characteristics prediction of single and dual voltage transformers, suitable for an automated design environment. For the development of the package, a particular scalar potential formulation was adopted. This method, in conjunction with the detailed representation of the real transformer geometry enables the achievement of high accuracy with the use of meshes of low density. The computational efficiency is also enhanced by the use of Morse technique for the storage of finite element matrices and Preconditioned Conjugate Gradient method for the solution of the finite element equations. The software has been incorporated in the design process of a transformer manufacturing industry for the evaluation of the leakage field and short-circuit impedance. The comparison of its results with measured values indicates the improvement of accuracy in comparison to the existing methodology, resulting in reduction of the design margin. Moreover, its employment has contributed to the decrease of the transformer industrial cycle and production cost. (C) 2007 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Computers in Industry	en
dc.identifier.doi	10.1016/j.compind.2007.09.005	en
dc.identifier.isi	ISI:000254818000002	en
dc.identifier.volume	59	en
dc.identifier.issue	4	en
dc.identifier.spage	338	en
dc.identifier.epage	350	en