Mixed Si-Fe wound cores five legged transformer: Losses and flux distribution analysis

Kefalas, TD; Kladas, AG

dc.contributor.author	Kefalas, TD	en
dc.contributor.author	Kladas, AG	en
dc.date.accessioned	2014-03-01T02:53:54Z
dc.date.available	2014-03-01T02:53:54Z
dc.date.issued	2012	en
dc.identifier.issn	00189464	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36485
dc.subject	Magnetic cores	en
dc.subject	magnetic field measurement	en
dc.subject	magnetic losses	en
dc.subject	power transformers	en
dc.subject.other	Excitation currents	en
dc.subject.other	Experimental evidence	en
dc.subject.other	Flux densities	en
dc.subject.other	Flux distributions	en
dc.subject.other	Grain oriented electrical steel	en
dc.subject.other	Grain-oriented steel	en
dc.subject.other	Harmonics content	en
dc.subject.other	High magnetization	en
dc.subject.other	High permeability	en
dc.subject.other	Low costs	en
dc.subject.other	Low permeability	en
dc.subject.other	Nonuniformity	en
dc.subject.other	Three-phase transformers	en
dc.subject.other	Transformer core	en
dc.subject.other	Wave forms	en
dc.subject.other	Wound core	en
dc.subject.other	Magnetic cores	en
dc.subject.other	Magnetic field measurement	en
dc.subject.other	Magnetic leakage	en
dc.subject.other	Power transformers	en
dc.subject.other	Silicon steel	en
dc.subject.other	Silicon	en
dc.title	Mixed Si-Fe wound cores five legged transformer: Losses and flux distribution analysis	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/TMAG.2011.2172929	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TMAG.2011.2172929	en
heal.identifier.secondary	6172335	en
heal.publicationDate	2012	en
heal.abstract	This paper proposes a three-phase five legged wound transformer core constructed of two high permeability Si-Fe wound cores and two conventional Si-Fe wound cores. The two large internal wound cores are manufactured of high permeability, grain-oriented electrical steel. The two small outer wound cores are manufactured of conventional, grain-oriented electrical steel. The specific arrangement is based on experimental evidence concerning the peak flux density non-uniformity of the typical three-phase five legged wound transformer core, constructed of the high magnetization grain-oriented steel. Since the peak flux density of the two outer cores is lower than the two internal cores, low cost, low permeability, conventional grain-oriented electrical steel can be used for the outer cores. Losses, excitation currents, flux waveforms, and their harmonics contents are presented in this paper. A comparison of the mixed three-phase transformer core and the typical one is also carried out. © 2006 IEEE.	en
heal.journalName	IEEE Transactions on Magnetics	en
dc.identifier.doi	10.1109/TMAG.2011.2172929	en
dc.identifier.volume	48	en
dc.identifier.issue	4	en
dc.identifier.spage	1609	en
dc.identifier.epage	1612	en