Field-pole leakage flux in salient-pole dynamo-electric machines

摘要

In this paper the authors investigate the problem in salient-pole dynamo-electric machines of flux passing from field pole-tip to pole-tip without linking the armature winding. This flux, designated ¿pole-tip leakage,¿ is of broad interest in determining both transient and steady-state performance characteristics of salient-pole dynamo-electric machines. The problem is treated as one of two' dimensions and the method of conformal transformation is used to obtain results in the form of elliptic functions. Numerical results are obtained by a method of cross-plotting and given in curve form for the usual range of variables. The curves have been used in the design of machines for 5 years, and the great number of test-results obtained have been found to be in very satisfactory agreement with the calculations.