The accurate modelling of dynamic hysteresis loops of soft magnetic materials is important in simulating the iron loss of electrical steels and cores, especially to predict the hysteresis loops and losses under arbitrary excitations. Furthermore, more efficient numerical method coupling with the dynamic hysteresis effect should be continuously investigated. The harmonic balance finite element method (HBFEM) is efficient for the simulation of nonlinear electromagnetic field; however, it is difficult for HBFEM to directly integrate the dynamic hysteresis model.
In the presentation, a dynamic hysteresis model, considering the skin effect, to predict the hysteresis loops under arbitrary excitations only with the measured sinusoidal data is introduced and validated by specimens with various types of magnetic materials. On the other side, the issues when coupling the hysteresis model into the harmonic balance finite element method are discussed. An amorphous transformer core is implemented in analyzing the effect by integrating the hysteresis model into the frequency-domain FE analysis.