水轮发电机定子绕组不对称支路电磁参数计算模型

为了探讨水轮发电机定子绕组不对称支路参数的计算问题，根据交流电机多回路理论，建立了绕组不对称支路参数计算的数学模型，给出了应用有限元方法计算绕组不对称支路参数的通用方法。通过对样机计算表明，该方法可用于任意线圈组合的电磁参数计算，且计算结果准确；绕组各支路电磁参数的不一致完全体现了各支路不对称程度，不对称支路间的环流损耗随绕组不对称度的增大呈指数关系增长；采用有限元方法进行不对称绕组支路电磁参数的计算，为支路不对称绕组的设计提供了依据，同时也为发电机绕组故障分析打下了良好的理论基础

Calculation model of asymmetric-branches electromagnetic parameters for hydro-generator stator winding

For discussing on calculation of asymmetric-branches electromagnetic parameters for hydro-generator stator winding, according to the theory of the electrical machinery, a mathematics model calculated parameter of the asymmetric branches winding is set up, a universal winding calculated method by which asymmetric-branches winding electro-magnetic parameters can be calculated is given. It indicates, the method can be used in the calculation of electromagnetic parameter of the freewill coils, and the result of calculation is accurate. Researches show that the winding branches electromagnetic parameters are_fully embody the winding branches asymmetry degree, and the circulating current losses among the branches increase exponentially with the asymmetric EMF degree of winding. That the asymmetric branches winding electromagnetic parameters being calculated by FEM can provide the basis for the branches asymmetric winding design, and also makes the mathematical base for analyzing failure of generator winding.