A Dynamic Hysteresis Model for Ultra-thin GO Silicon Steel Under Multi-harmonic Excitation

The main work of this paper is to propose a dynamic hysteresis model to predict magnetic hysteresis characteristics under multi-harmonic excitations. First, a new expression of eddy current field is presented while using a segmentation linear method to approximate the non-linear magnetization. A method to identify the parameters corresponding to eddy current loss is introduced. Then based on the parameter extraction of the ultra-thin GO silicon steel under different single frequency sinusoidal excitations, a dynamic hysteresis model for multi-harmonic excitations is proposed. The predicted hysteresis loops under different multi-harmonic excitations are compared with the measured one and the accuracy of the proposed model is verified.