Transformers made of composite magnetic cores: An innovative design approach

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dc.contributor.author Kefalas, TD en
dc.date.accessioned 2014-03-01T11:46:22Z
dc.date.available 2014-03-01T11:46:22Z
dc.date.issued 2009 en
dc.identifier.issn 18744761 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/37856
dc.subject Composite magnetic cores en
dc.subject Distribution transformers en
dc.subject Finite element methods en
dc.subject Grain-oriented steel en
dc.subject No load losses en
dc.subject Optimization methods en
dc.subject Total owing cost en
dc.subject Wound cores en
dc.subject.other Composite magnetic core en
dc.subject.other Distribution transformer en
dc.subject.other Distribution transformers en
dc.subject.other Grain-oriented steel en
dc.subject.other No load en
dc.subject.other Optimization method en
dc.subject.other Optimization methods en
dc.subject.other Wound core en
dc.subject.other Cost reduction en
dc.subject.other Design en
dc.subject.other Electric load loss en
dc.subject.other Electric machinery en
dc.subject.other Finite element method en
dc.subject.other Magnetic circuits en
dc.subject.other Magnetic cores en
dc.subject.other Magnetic devices en
dc.subject.other Optimization en
dc.subject.other Patents and inventions en
dc.subject.other Magnetism en
dc.title Transformers made of composite magnetic cores: An innovative design approach en
heal.type other en
heal.identifier.primary 10.2174/1874476110902010001 en
heal.identifier.secondary http://dx.doi.org/10.2174/1874476110902010001 en
heal.publicationDate 2009 en
heal.abstract Nowadays, transformers are made of conventional magnetic cores which are constructed of a single grainoriented or amorphous, magnetic steel. Even though, the transformer is the most efficient of electrical machines, with efficiencies typically above 90%, it is possible to improve transformer performance by using composite magnetic cores. Patents related to this simple and effective technique can be traced back to 1929. The specific technique can be applied to wound core distribution transformers. By using wound cores constructed with a combination of conventional and high permeability grain-oriented steel the total owing cost (TOC) of the transformer can be reduced effectively. This paper presents a brief review of patents on wound and composite magnetic cores and introduces a generalized technique for the determination of the optimum design variables of a new composite wound core design. © 2009 Bentham Science Publishers Ltd. en
heal.journalName Recent Patents on Electrical Engineering en
dc.identifier.doi 10.2174/1874476110902010001 en
dc.identifier.volume 2 en
dc.identifier.issue 1 en
dc.identifier.spage 1 en
dc.identifier.epage 12 en

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