Materials for High-Performance Machines
High-efficiency electrical machines play a key role in the ongoing efforts to reduce energy consumption and improve the efficiency of electrical devices. For their design process, an accurate understanding of magnetic material characteristics is crucial. General magnetic data for magnetic materials are available from the manufacturers' data sheets or database collections [1]. These data are usually obtained experimentally with Epstein frame samples or toroidal rings, following international material characterization standards [2]. However, stator cores of rotating electrical machines have a round shape and, thus, a different magnetic field and magnetic flux-density distribution, leading to different magnetization schemes and other iron-loss hotspots.