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Magnetic anisotropy under arbitrary excitation in finite element models

Bavendiek Gregor, Leuning Nora, Müller Fabian, Schauerte Benedikt, Thul Andreas, Hameyer Kay

Archives of Electrical Engineering

2019

Vol. 68, nr 2

455--466

Magnetic properties of silicon iron electrical steel are determined by using standardized measurement setups and distinct excitation parameters. Characteristic values for magnetic loss and magnetization are used to select the most appropriate material for its application. This approach is not sufficient, because of the complex material behavior inside electrical machines, which can result in possible discrepancies between estimated and actual machine behavior. The materials’ anisotropy can be one of the problems why simulation and measurement are not in good accordance.With the help of a rotational single sheet tester, the magnetic material can be tested under application relevant field distribution. Thereby, additional effects of hysteresis and anisotropy can be characterized for detailed modelling and simulation.