Patent ID: 10374497

Abstract:
In a method to manufacture an improved exciter for a generator, the exciter comprising an exciter rotor, and an exciter stator, a coil of full hard cold rolled electrical steel is provided, the steel comprising at least silicon in a weight percent greater than 0.60%. Without a prior annealing of the full hard cold rolled steel coil, the coil is slit to create at least one strip. The at least one strip is stamped to create a plurality of rotor laminations and a plurality of stator laminations from the same strip. The rotor laminations are separated from the stator laminations and the set of rotor laminations and the set of stator laminations are created. Only the set of exciter rotor laminations are annealed. The annealed set of exciter rotor laminations are assembled to create the exciter rotor and the set of not annealed exciter stator laminations are assembled to create the exciter stator.