A mathematical approach to loss estimation in non-homogeneous magnetic materials

The paper deals with the application of the homogenization technique to the electromagnetic analysis of non-homogeneous materials composed of grains bounded by a layer whose electrical and magnetic characteristics are sensibly different. The investigation is performed by comparing local and integral quantities, provided by the proposed approach, with the results given by a standard finite element solution, which requires a significantly higher processing time. The influence of different geometrical and constitutive parameters and the merits and limits of the method are finally discussed.