Abstract
Consideration of a fully coupled lamination model with eddy currents and magnetic hysteresis in standard finite element (FE) models is prohibitively expensive in terms of implementation effort, memory requirements and computation time. Hence this paper utilizes an algebraic approximation of the lamination model as a conventional constitutive relationship in two-dimensional FE simulations of rotating electrical machines. Extraction of model structure and parameters of the parametric model as well as iterative adaption of the homogenized FE characteristic are presented. This pragmatic approach turns out to be quite accurate and efficient simultaneously allowing for refinement of the pre-determined parametric expression by iterating between the fully coupled lamination model and the macroscopic model.
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