A time-stepping finite element method combining analytical and numerical solutions for laminated-material homogenization is proposed to calculate 3-D magnetic leakage field and its structural parts stray losses in a 380 000 kVA/500 kV single-phase power transformer, and the high-order harmonics of field components can be considered. To verify the method and computation code, a supplementary model of Team Problem P21C-M1is made. Measured and computed results to the model indicate the validity of the method proposed.
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Zhu et al. (2012) studied this question.
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