CALCULATION OF THE MAGNETIC-BEHAVIOR OF ELECTRICAL STEEL SHEET UNDER 2-DIMENSIONAL EXCITATION BY MEANS OF THE RELUCTANCE TENSOR

A mathematical description of the non-linear and anisotropic behaviour of electrical steel sheet under two dimensional excitation is present ed considering the field penetration into the bulk of the material. Th is description allows the calculation of the distribution of the magne tic field strength and the magnetic flux density for arbitrary two dim ensional flux conditions in the cross section of the sheet. The calcul ation of the dynamic hysteresis loops and the loci of the magnetic fie ld strength, respectively, by means of the proposed mathematical model shows very good agreement with the corresponding measurement results.