Flexible Extension of Hysteresis Models for Magnetic Anisotropy

Increased demands on iron loss calculation of electrical machines require accurate models to replicate the magnetization behavior of the soft magnetic materials in any spatial direction. Two-dimensional measurement devices are developed to characterize the vector properties of the material and the power losses. These two-dimensional measurements reveal a variety of features and characteristics that cannot be reproduced by most of the conventional one-dimensional hysteresis models and their phenomenological two-dimensional extensions. This letter discusses the effect of magnetic anisotropy by using measured data obtained from a rotational power loss tester for an exemplary non-oriented electrical steel. A flexible solution that combines the entirety of crystal orientations within the material with the magneto-crystalline anisotropy is presented in this letter and discussed with respect to the general ability to recreate the observed behavior.