【摘要】 文献[1]导出了汽轮发电机端部电流密度表达式和复电磁场方程的有限元离散格式,提出了确定各涡流区边界上任意给定点的标量电位值,以保证电流连续性的方法。本文在此基础上,计算了一台30万瓩汽轮发电机在空载、三相稳态短路和功率因数由迟相到进相变化时的端部漏磁场,绘出了不同工况下端部构件表面法向磁密和构件内损耗密度分布图,得出了一些有用的结论。更多还原

【Abstract】 In literature[1], the expression of current densities in the end windingof turbogenerator and the finite element discrete format of complex electro-magnetic field equation are given, the scalar potential of any fixed pointat the boundary of eddy current zone is determined and the continuity con-dition of current is satisfied. On these basis, magnetic field in the endregion of a 300MW turbogenerator is calculated at no-load, 3 phase shortcircuit and operation under leading power factor.更多还原