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Comparison of a simple and a detailed model of magnetic hysteresis with measurements on electrical steel
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
2009 (English)In: Compel, ISSN 0332-1649, Vol. 28, no 3, 700-710 p.Article in journal (Refereed) Published
Abstract [en]

Purpose - For efficient magnetic field calculations in electrical machines, the hysteresis and losses in laminated electrical steel must be modeled in a simple and reliable way. The purpose of this paper is to investigate and discuss the potential of a simple complex-permeability model. Design/methodology/approach - A frequency dependent complex-permeability model as well as a more detailed model (describing hysteresis, classical eddy current effects, and excess losses separately) are compared to single-sheet measurements on laminated electrical steel. It is discussed under which circumstances the simple complex-mu model is an adequate substitute for the more detailed model. Findings - A satisfactory agreement of the simple complex-mu model was found with both detailed model and measurements, improving with increasing frequencies. This is true not only for the effective permeability function, but holds also for the detailed H-B characteristics (hysteresis). Originality/value - It is demonstrated that the complex-A model is a reliable and convenient starting point for the estimation of flux distribution and losses in complicated magnetic core geometries.

Place, publisher, year, edition, pages
Emerald Group Publishing Limited, 2009. Vol. 28, no 3, 700-710 p.
Keyword [en]
Electrical machines, Steel, Permeability, Eddy currents, Electromagnetism
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-30813DOI: 10.1108/03321640910940954ISI: 000267277700017ScopusID: 2-s2.0-70349207532OAI: oai:DiVA.org:kth-30813DiVA: diva2:403231
Conference
20th Sympsoium on Electromagnetic Phenomena in Nonlinear Circuits Univ Lille, Lille, FRANCE, JUN, 2008
Note
QC 20110311Available from: 2012-02-13 Created: 2011-03-04 Last updated: 2012-02-13Bibliographically approved

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