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Modeling the Steinmetz's law for soft steel

Published online by Cambridge University Press:  22 July 2010

J. Takacs ,
Gy. Kovacs  and
L. K. Varga
J. Takacs*
Affiliation:
Department of Engineering Science, University of Oxford, Oxford, UK
Gy. Kovacs
Affiliation:
Department of Materials, Physics of Eotvos Lorant Univ. 1518, P.O. Box 32, Budapest, Hungary
L. K. Varga
Affiliation:
Research Institute for Solid State Physics and Optics, 1525, P.O. Box 49, Budapest, Hungary
*
* [email protected]
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Abstract

The loss calculation in soft magnetic materials, used in the manufacturing industry, is still ruled by Steinmetz's simple law. It has remained unchallenged for more than a century, unproven but successfully used by designers of magnetic components. Based on experiments carried out on soft NO Fe–Si and Mn–Zn ferrite samples, in this paper we present a model of Steinmetz's approximation, based on the hyperbolic model. We also make suggestions for the formula's possible extension to a wider range of coercivity, possibly covering not only soft iron but also other groups of magnetic materials as well, used in industry.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 51 , Issue 2 , August 2010 , 20801
Copyright
© EDP Sciences, 2010

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