Abstract
Numerical modeling of iron loss considering the pinning and skin effect in silicon steel sheets is approached in this work. The pinning and skin effect are considered as the main factors of anomalous eddy current loss in silicon steel plates. The pinning is considered by implementing an initial flux distribution in the nonlinear eddy current finite element analysis, which includes the skin effect of flux. Thus the mutual coherence between pinning and skin effect can be achieved in the proposed numerical method. The hysteresis loss and eddy current loss are calculated using the obtained flux and eddy current distribution, while anomalous eddy current loss is spontaneously included in the calculation. The proposed method is applied to different grade non-oriented materials, and the calculated iron losses are compared with the measured data under various frequency.
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