Turbine generator having an A/C exciter
First Claim
Patent Images
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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Abstract
The object of the invention is to provide a generator easy to assemble even if there is an obstacle such as a turbine in the axial direction of the rotor of the generator. A generator comprising: a rotor having a permanent magnet placed therein and supported to be rotatable, and a stator having a field coil wound thereon, characterized in that, the rotor is provided with a seating made of a magnetic material for supporting the permanent magnet and a pole shoe made of a magnetic material placed in the outward radial direction of the permanent magnet.
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Citations
7 Claims
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1. A generator comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification