Analysis of the grain oriented electrical steel heterogeneities and their influence on the Epstein frame loss measurements

Issue title: Electromagnetic Fields in Mechatronics, Computer Sciences, Electrical and Electronic Engineering

Guest editors: Sławomir Wiak, Paolo Di Barba and Evelina Mognaschi

Article type: Research Article

Authors: Corin, Ronan^a; | Lecointe, Jean-Philippe^a | Demian, Cristian^a | Blaszkowski, Jonathan^b

Affiliations: [a] Laboratoire Systèmes Electrotechniques et Environnement (LSEE), Université d'Artois (UR 4025), Béthune, France | [b] Thyssenkrupp Electrical Steel, Isbergues, France

Correspondence: [*] Corresponding author: Ronan Corin, Laboratoire Systèmes Electrotechniques et Environnement (LSEE), Univ. Artois, UR4025, Béthune, F-62400, France. E-mail: ronan.corin@univ-artois.fr

Abstract: The Epstein frame is a well-known standardized system used to characterize soft magnetic materials. The users of this device usually consider that all the strips of a same grade placed in the frame are homogeneous, and they do not take into account the potential impact of the heterogeneity of the sheets on the quality of the characteristics deduced from the measurements. The aim of this paper is to quantify the individual heterogeneity of Epstein samples of the same FeSi grade (BH curve, losses, permeability), and to analyze, by both experimental and numerical ways, if the layout of the sheets can impact the Epstein core losses.

Keywords: Grain oriented electrical steel, epstein frame, heterogeneity, silicon iron, iron losses

DOI: 10.3233/JAE-210184

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 69, no. 2, pp. 293-302, 2022