85. Precautions in the Modernization of Hydroge nerators – How to Eliminate Old Deficiencies and Avoid New Problems Alvares Sidney, Haluska Carlos Junior, Costa Carlos Alberto Dias, Suiama Paulo Kazuo (Proceedings, Hydro 2003, Vol. I, Croatia, pp. 557–564). Abstract The present article addresses problems that may occur during rehabilitation process of the hydrogenerator units, mainly in the design of a new stator core and a new stator winding. The possibility of introducing new technical problems (that did not exist in the original design) during the generator modernization must be taken into account. Opposed to a new generator design case, many of the rehabilitation cases are based on already defined parameters, that cannot be altered and that vary from case to case: number of stator slots, inner and outer core diameter, air gap, foundations, brackets, frame etc. Top Keywords Modernization, Hydro-generator, Hydroelectric, Generators, Reforms, Rehabilitation, Design problems. Top |