Relevance of multidirectional magnetostriction for the noise generation of transformer cores

As well known, T-joint regions of three-phase transformer cores tend to show rotational magnetisation (RM) patterns which yield distinct increases of magnetostriction. The present work was focused on the question whether these local phenomena exhibit practical relevance for the core's global ma...

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Bibliographic Details
Published in:	Journal of magnetism and magnetic materials Vol. 215-216; pp. 634 - 636
Main Authors:	Krell, C, Baumgartinger, N, Krismanic, G, Leiss, E, Pfutzner, H
Format:	Journal Article
Language:	English
Published:	08-09-1999
Online Access:	Get full text
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Summary:	As well known, T-joint regions of three-phase transformer cores tend to show rotational magnetisation (RM) patterns which yield distinct increases of magnetostriction. The present work was focused on the question whether these local phenomena exhibit practical relevance for the core's global magnetostriction-caused strain. A main effect was found for the yoke's horizontal direction, RM causing about 80% increase of total strain in the T- joint region and 40% for the total yoke.
Bibliography:	SourceType-Scholarly Journals-2 ObjectType-Conference Paper-1 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Feature-2 ObjectType-Article-3
ISSN:	0304-8853