Electromagnetic analysis and comparison of conventional-wound cores and octagonal-wound cores of distribution transformers

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

dc.contributor.author	Hernandez, I	en
dc.contributor.author	Canedo, JM	en
dc.contributor.author	Olivares-Galvan, JC	en
dc.contributor.author	Georgilakis, PS	en
dc.date.accessioned	2014-03-01T02:53:15Z
dc.date.available	2014-03-01T02:53:15Z
dc.date.issued	2011	en
dc.identifier.issn	02555476	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36191
dc.subject	Core laminations	en
dc.subject	Eddy-current losses	en
dc.subject	Excitation current	en
dc.subject	Octagonal wound cores	en
dc.subject	Wound cores	en
dc.subject.other	Core laminations	en
dc.subject.other	Core loss	en
dc.subject.other	Distribution transformer	en
dc.subject.other	Eddy current-loss	en
dc.subject.other	Eddy-current losses	en
dc.subject.other	Electromagnetic analysis	en
dc.subject.other	Excitation currents	en
dc.subject.other	FEM simulations	en
dc.subject.other	Grain oriented electrical steel	en
dc.subject.other	Nonlinear properties	en
dc.subject.other	Transformer configuration	en
dc.subject.other	Wound core	en
dc.subject.other	Eddy currents	en
dc.subject.other	Electromagnetism	en
dc.subject.other	Excited states	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	Superconducting materials	en
dc.subject.other	Superconductivity	en
dc.subject.other	Three dimensional computer graphics	en
dc.subject.other	Electric excitation	en
dc.title	Electromagnetic analysis and comparison of conventional-wound cores and octagonal-wound cores of distribution transformers	en
heal.type	conferenceItem	en
heal.identifier.primary	10.4028/www.scientific.net/MSF.670.477	en
heal.identifier.secondary	http://dx.doi.org/10.4028/www.scientific.net/MSF.670.477	en
heal.publicationDate	2011	en
heal.abstract	This paper presents comparative results of an electromagnetic study performed in two different wound core transformer configurations in order to know the best configuration that reduce excitation current and core losses. The results show that octagonal wound-core (OWC) reduces the excitation current and eddy-current losses with respect conventional-wound core (CWC). The results were obtained applying 2D and 3D FEM simulations, taking into account the non-linear properties of the core. In the last part of this paper, several grades of grain oriented electrical steels and the combination of them are analyzed to find the best mixing percentage to reduce eddy-current losses and excitation current.	en
heal.journalName	Materials Science Forum	en
dc.identifier.doi	10.4028/www.scientific.net/MSF.670.477	en
dc.identifier.volume	670	en
dc.identifier.spage	477	en
dc.identifier.epage	486	en