MODELING OF COMPLEX PERMEABILITY IN CORES

In the numerical field analysis a problem that still remains is the de velopment of magnetic parameter models that accurately represents the effect of magnetic anisotropy under complex magnetic conditions. Two m odified approaches have been used for the calculation of complex perme ability ill oriented FeSi lamination. In the first approach pure relax ation processes have been accepted in model approximation and the hyst eresis effects have been taken into account separately neglecting the relaxation. In the second approach, besides separated pure irreversibl e processes also mixed processes. i.e, relaxation and hysteresis mutua lly influenced are considered. In weak alternating field these irrever sible processes have been represented by Rayleigh loop.