A novel octagonal wound core for distribution transformers validated by electromagnetic field analysis and comparison with conventional wound core

Hernandez, I; Olivares-Galvan, JC; Georgilakis, PS; Canedo, JM

dc.contributor.author	Hernandez, I	en
dc.contributor.author	Olivares-Galvan, JC	en
dc.contributor.author	Georgilakis, PS	en
dc.contributor.author	Canedo, JM	en
dc.date.accessioned	2014-03-01T01:32:29Z
dc.date.available	2014-03-01T01:32:29Z
dc.date.issued	2010	en
dc.identifier.issn	0018-9464	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20161
dc.subject	Eddy currents	en
dc.subject	Electromagnetic field	en
dc.subject	Finite-element methods	en
dc.subject	Laminations	en
dc.subject	Octagonal wound cores	en
dc.subject	Rolling direction	en
dc.subject	Transformer core	en
dc.subject	Wound core	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Distribution transformer	en
dc.subject.other	Eddy current-loss	en
dc.subject.other	Electromagnetic field analysis	en
dc.subject.other	Excitation currents	en
dc.subject.other	Grain-oriented silicon steel	en
dc.subject.other	Nonlinear properties	en
dc.subject.other	Rolling direction	en
dc.subject.other	Three-dimensional finite element method	en
dc.subject.other	Transformer core	en
dc.subject.other	Wound core	en
dc.subject.other	Electromagnetic field measurement	en
dc.subject.other	Electromagnetic fields	en
dc.subject.other	Finite element method	en
dc.subject.other	Laminating	en
dc.subject.other	Magnetic materials	en
dc.subject.other	Silicon steel	en
dc.subject.other	Eddy currents	en
dc.title	A novel octagonal wound core for distribution transformers validated by electromagnetic field analysis and comparison with conventional wound core	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TMAG.2010.2040623	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TMAG.2010.2040623	en
heal.identifier.secondary	5427073	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	This paper analyzes a novel configuration of transformer core, called octagonal wound core (OWC), and shows the minimization of the excitation current and the reduction of the eddy-current losses. The OWC is compared with the conventional wound core (CWC) configuration. The comparison is based on two-dimensional and three-dimensional finite-element method (FEM) simulations, taking into account the nonlinear properties of the magnetic material of the core. The results show that the OWC reduces the excitation current and the eddy-current losses when compared with CWC. Moreover, several combinations of grades of the grain-oriented silicon steel (GOSS) were investigated so as to further reduce the eddy-current losses and the excitation current. © 2010 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Magnetics	en
dc.identifier.doi	10.1109/TMAG.2010.2040623	en
dc.identifier.isi	ISI:000279582500019	en
dc.identifier.volume	46	en
dc.identifier.issue	5	en
dc.identifier.spage	1251	en
dc.identifier.epage	1258	en