Hysteresis and Loss Characteristics of Soft Magnetic Materials Based on Nonlinear Preisach Model

In order to accurately describe the hysteresis and loss characteristics of soft magnetic materials, a nonlinear Preisach model is introduced to simulate the hysteresis characteristics of three soft magnetic materials, and the dynamic distribution parameters of the nonlinear model are determined by experimentally measuring the data of the first-order reversal curves and second-order reversal curves of three soft magnetic materials under DC static magnetic fields. Comparing the static limit hysteresis lines of soft magnetic materials, it is proved that the model can describe the hysteresis characteristics of soft magnetic materials more accurately. Combined with the loss separation principle, a more accurate loss prediction method for soft magnetic materials is proposed. By comparing the experimental results of loss separation of different soft magnetic materials under different working conditions with the calculated results, it is found that they are in good agreement, which shows that the dynamic loss model can better describe the magnetic loss of soft magnetic materials and each component and verify the correctness and generality of the model.