Prevention of rotor-winding deformation on turbogenerators

H. D. Taylor (General Electric Company, Schenectady, N. Y.): Mr. Noest´s paper is a most interesting one and shows evidence of the great deal of thought which he must have given this intricate problem of rotor-winding distortion. Although, from a practical point of view, the general nature of this problem seems to be fairly well understood, I believe it is not susceptible to precise mathematical solution on the basis of available data. There are many other ramifications beyond those treated by Mr. Noest, including such points as: the non-uniform lengthwise distribution of compressive stress caused by partial slipping of conductors on the wedges; the variation in temperature along the length of the coils (which may be quite as important as the variation through their radial depth); and the quantitative evaluation of creep effects (or, more properly, relaxation effects).