Patent ID: 7732958
Filing Date: 2010-06-08
Classification: F01D,F02C

Abstract:
1. A turbogenerator comprising: a stator having an armature winding; a rotor having a field winding; a coupling monolithically formed with a shaft of said rotor; a rotary rectifier; an AC exciter for supplying a DC current to said field winding through said rotary rectifier; a rotor bearing arrangement disposed at both sides of said shaft; and a sub-exciter having a permanent magnet as a field generator, supplying a DC current to a field winding of said AC exciter, being arranged between a rotor bearing and said coupling at one side of said shaft, a stator of said sub-exciter being split in the circumferential direction, and said AC exciter arranged at a side of said stator other than the same side as that of said sub-exciter, wherein said stator, said rotor, said coupling, said rotary rectifier, said AC exciter, and said sub-exciter are arranged over said shaft of said rotor, and a pedestal portion for mounting the sub-exciter to the shaft of the rotor, the shaft of the rotor, the coupling and the pedestal portion are monolithically formed of a unitary piece of material.