On energy dissipation and hysteresis of materials in electromagnetic formulations, the dilemma of heterogeneity, local non linear properties, and fields coupling

Most soft materials used in power electrical devices adopt more or less organized small structures with domains and walls. Microscopic eddy currents are therefore induced with time varying fields, they give rise to excess losses and dynamic hysteresis. In this paper, we first introduce magnetic and...

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Bibliographic Details
Published inINTERMAG 2006 - IEEE International Magnetics Conference p. 909
Main Authors Maloberti, O., Meunier, G., Mazauric, V., Kedous-Lebouc, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2006
Subjects
Eddy currents
Electromagnetic coupling
Electromagnetic fields
Energy dissipation
Magnetic domain walls
Magnetic domains
Magnetic hysteresis
Magnetic materials
Microscopy
Soft magnetic materials
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Summary:Most soft materials used in power electrical devices adopt more or less organized small structures with domains and walls. Microscopic eddy currents are therefore induced with time varying fields, they give rise to excess losses and dynamic hysteresis. In this paper, we first introduce magnetic and electric dynamic properties and dedicated formulations usable within numerical simulation tools. We then argue the use of local homogeneous parameters, which is closely linked to the choice of fields coupling at each border of a given region.
ISBN:1424414792
9781424414796
ISSN:2150-4598
2150-4601
DOI:10.1109/INTMAG.2006.374940