Iron-loss model for arbitrary magnetization loci in NO electrical steel

Article type: Research Article

Authors: Schauerte, Benedikt^a; | Steentjes, Simon^a | Thul, Andreas^a | Hameyer, Kay^a

Affiliations: [a] Institute of Electrical Machines, RWTH Aachen University, Aachen, Germany

Correspondence: [*] Corresponding author: Benedikt Schauerte, Institute of Electrical Machines, RWTH Aachen University, Schinkelstr. 4, Aachen, D-52062, Germany. E-mail: Benedikt.schauerte@iem.rwth-aachen.de

Abstract: The design of electrical machines requires accurate models for the estimation of locally occurring iron losses. For this purpose, varieties of iron-loss models are proposed. These allow one to calculate iron losses as a function of the unidirectional peak flux density Bm and magnetization frequency f. Two-dimensional effects such as the materials’ anisotropy and its influence on the loss behavior are neglected in most of these models, e.g., the dependency of the iron losses on the spatial loci of the magnetic field. Nonetheless, these effects have a considerable influence on the local iron-loss distribution. Measurements under vector-field conditions, which consider the flux loci and the magnetic anisotropy, along with modeling approaches to replicate the behavior are presented in this work.

Keywords: iron loss modeling, vector hysteresis, magnetic anisotropy

DOI: 10.3233/JAE-191599

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 61, no. S1, pp. S89-S96, 2019