Transformer joints FE analysis using pseudo-source technique

Kefalas, TD; Loizos, G; Kladas, AG

dc.contributor.author	Kefalas, TD	en
dc.contributor.author	Loizos, G	en
dc.contributor.author	Kladas, AG	en
dc.date.accessioned	2014-03-01T02:47:30Z
dc.date.available	2014-03-01T02:47:30Z
dc.date.issued	2011	en
dc.identifier.issn	0018-9464	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33184
dc.subject	Finite-element methods	en
dc.subject	magnetic cores	en
dc.subject	power transformers	en
dc.subject	soft magnetic materials	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	3-D FE analysis	en
dc.subject.other	Computational costs	en
dc.subject.other	Core loss	en
dc.subject.other	Distribution transformer	en
dc.subject.other	European Union	en
dc.subject.other	FE analysis	en
dc.subject.other	FE formulation	en
dc.subject.other	Finite element methodology	en
dc.subject.other	Flux measurements	en
dc.subject.other	Loading characteristics	en
dc.subject.other	Total loss	en
dc.subject.other	Transformer efficiency	en
dc.subject.other	Vector hysteresis models	en
dc.subject.other	Finite element method	en
dc.subject.other	Hysteresis	en
dc.subject.other	Magnetic circuits	en
dc.subject.other	Magnetic cores	en
dc.subject.other	Magnetic devices	en
dc.subject.other	Magnetism	en
dc.subject.other	Power transformers	en
dc.subject.other	Transformer substations	en
dc.subject.other	Soft magnetic materials	en
dc.title	Transformer joints FE analysis using pseudo-source technique	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/TMAG.2010.2098020	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TMAG.2010.2098020	en
heal.identifier.secondary	5754702	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Distribution transformers losses are equal to almost 2% of the electricity generated worldwide and only in the European Union are estimated at about 33 TWh/year. Approximately 75% of the total losses are due to core losses as a result of the loading characteristics of distribution transformers. Design of the joints of magnetic cores has a profound impact on core losses and transformer efficiency. The paper introduces a finite element methodology for the analysis of transformer joints. The proposed technique consists in the application of certain boundary conditions for the excitation of the joints. The main advantages of the pseudo-source technique include minimization of the computational cost and ease of implementation. The technique is combined with a number of FE formulations and a vector hysteresis model. Two-dimensional as well as 3-D FE analysis is studied. Longitudinal and normal flux measurements were carried out for the validation of the proposed technique. © 2011 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Magnetics	en
dc.identifier.doi	10.1109/TMAG.2010.2098020	en
dc.identifier.isi	ISI:000289909100050	en
dc.identifier.volume	47	en
dc.identifier.issue	5	en
dc.identifier.spage	1058	en
dc.identifier.epage	1061	en