Assessing anomalous losses with dynamic hysteresis models

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part I

Article type: Research Article

Authors: Mazauric, Vincent^{a; *} | Drouineau, Mathilde^b | Rondot, Loïc^b

Affiliations: [a] Schneider Electric, Strategy and Innovation, 37 Quai Paul Louis Merlin, 38050 Grenoble Cedex 9, France | [b] MINES ParisTech, Centre for Applied Mathematics, BP207, 06902 Sophia-Antipolis, France | [c] CEDRAT, 15 Chemin de Malacher, 38450 Meylan Cedex, France

Correspondence: [*] Corresponding author. Tel.: +33 4 76 57 74 73; Fax: +33 4 76 57 32 62; E-mail: vincent.mazauric@schneider-electric.com

Abstract: A new approach to face the problem of dynamic hysteresis and assess extra-losses in soft magnetic materials is investigated. Thanks to a spatial averaging technique and a variational principle, a dedicated formulation is derived. It takes into account microscopic magnetization mechanisms and domain wall motion-induced Joule losses. A validation is proposed by assessing time-harmonic losses on a 2D-Pry and Bean iron sheet. Discussion includes also a confrontation with the delayed diffusion model and Bertotti's experiments.

Keywords: Electromagnetism, magnetic materials, transient formulations, eddy currents, dynamic hysteresis, anomalous losses

DOI: 10.3233/JAE-2010-1101

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 95-101, 2010