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The dynamic and static hysteresis properties as well as loss properties of grain oriented (GO) silicon steel sheet are measured under the AC-DC hybrid excitation containing both DC bias and harmonic components. The influence of the DC-biasing magnetic field, harmonic orders and phase shift angles on the iron loss is analyzed in depth based on the experimental data under different excitations. A dynamic hysteresis model and the parameter identification method is presented to simulate the asymmetrical hysteresis curve with minor loops. According to the equivalence between loss separation and field separation, the static part of magnetic field intensity are calculated by an improved Preisach model, while the dynamic parts are obtained by fitting the classical loss as well as excess loss. The consistency between simulation and measurement verifies the effectiveness and accuracy of the proposed method.

Study on Dynamic Hysteretic and Loss Properties of Silicon Steel Sheet Under Hybrid Harmonic and DC Bias Excitation