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Calculation of end region magnetic field and circulation losses for turbo-generators using a coupled field and circuit equations method

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5 Author(s)
Tang Renyuan ; Shenyang Polytech. Univ., China ; Xu Guangren ; Tian Lijian ; Zhao Danqun
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A method using coupled fields and circuit equations is presented to calculate the end-region magnetic field, the current distribution in stator winding strands, and the circulating losses of the stator winding in large turbogenerators. In the calculation, the nonuniform distribution of current density in the stator winding and the influence on the end-region magnetic field of the copper shield are considered. Finally, the effect of the transposed angle on the circulating losses is analyzed. The method is used to calculate the end-region magnetic field and the current of the stator winding strands in a two-pole 300-MW generator. Numerical results are presented

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Magnetics, IEEE Transactions on  (Volume:26 ,  Issue: 2 )