Eddy Current Heating in Large Salient Pole Generators

Authors – C.P.Riley and A.M. Michaelides

Abstract — Pole face heating in large salient pole generators has been observed for many years, leading to high trailing edge temperatures and degredation of insulation. Electromagnetic 3D finite element based software including rotation coupled to thermal analysis has been recently developed, enabling the mechanisms causing the heating to be examined. Accurate estimates of the ventilation and convective cooling are shown to be particularly important.

Eddy Current Heating paper