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Turbine generator having an A/C exciter

  • US 7,535,147 B2
  • Filed: 02/17/2006
  • Issued: 05/19/2009
  • Est. Priority Date: 03/25/2005
  • Status: Active Grant
First Claim
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1. A generator comprising:

  • a sub-exciter installed in a space between a coupling and a rotor shaft of the generator, the sub-exciter including;

    a rotor having a permanent magnet placed therein and supported to be rotatable; and

    a stator having an armature coil wound thereon, which is placed in a radial outward direction of the rotor;

    wherein the rotor is provided with a seating made of a magnetic material for supporting the permanent magnet, which is placed in a radial inward direction of the permanent magnet, a pole shoe made of a magnetic material is placed in a radial outward direction of the permanent magnet, a width in an axial direction of the permanent magnet is greater than that of the seating, and the stator includes a plurality of divisions, and the width of the permanent magnet in the circumferential direction is greater than the width of the seating in the circumferential direction.

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