Calculation of Core Loss in an Electrical Steel Sheet Based on the PLAY Hysteresis Model Under Rotational Magnetization

It has been proved that accurately predicting the hysteresis characteristic between the magnetic field intensity (II) and the magnetic flux density (B) is a more accurate method to calculate iron loss. In order to accurately predict the hysteresis characteristic, the expression form of the vector Play hysteresis operator is improved and a method of identification of the vector shape function is proposed. With the modification of the anisotropic coefficient matrix, the improved hysteresis model can accurately describe the hysteresis characteristic of electrical steel sheet under the alternating magnetization and the rotating magnetization. The effectiveness of the model is verified by comparing with the measured results of electrical steel sheet.