In order to accurately simulate the hysteresis characteristics of electrical steel sheets

the reversible magnetization component was characterized by introducing a parametric exponential function based on the analysis of reversible magnetization process and reversible permeability experimental data with the aim of solving the problem that the classical Preisach hysteresis model can not accurately describe the reversible magnetization process of material. Meanwhile

to solve the problem that the irreversible magnetization distribution function is difficult to be determined

the product of two one-dimensional functions is used to characterize it

and then the Everett function is established to determine the irreversible magnetization component. Finally

an improved Preisach model in which the reversible magnetization component is taken into account is established. A testing platform for magnetic characteristics of electrical steel was built

and the hysteresis characteristics of electrical steel under sinusoidal excitation at different frequencies were experimentally studied. The results show that the error of the modified Preisach model proposed by this paper is less than 10% for the hysteresis characteristics of two silicon steel plates.