Abstract :
The method of finding flux plots in the cross section of salient pole rotating machines is extended to large, internally cooled turbogenerators. The relaxation procedure used by the authors in former papers [1,2,3] is assumed to be known to the reader and is not reviewed here. The grid systems for the partial differential equations are described in detail for a Westinghouse Electric Corp. 200 MVA, 15 kV, wye-connected, four-pole, 1,500 r/min, 50 Hz generator. Flux plots in the cross section of the alternator and the distribution of the radial magnetic induction on the stator bore are determined at no-load, three-phase short circuit, and at balanced lagging and leading loads. Available test data compare well with calculated results.
