Magnetostrictive Simulation of Amorphous Alloy Based on Dynamic Jiles-Atherton Model

Magnetostriction is the main cause of vibration and noise of transformer core. In order to obtain a more accurate magnetostrictive model suitable for amorphous alloys, a new magnetostrictive model is established based on the im-proved Jiles-Atherton model and the quadratic domain rotation model. Among them, the eddy current loss and additional loss are considered, and the parameter v is introduced to reflect the change of k with the magnetization state in the actual magnetization process, all of which make the model have stronger physical significance. Particle swarm optimization algorithm is used to extract the parameters of the model. The data of amorphous alloy strip under different excitation sizes were measured and compared with the results of model calculation. The results show that the calculated results of the magnetostrictive model based on the hysteresis model which is more consistent with the physical basis are close to the measured data. The model established in this paper can be applied to the simulation of the magnetostrictive characteristics of amorphous alloys.