Flux shunt for a power generator stator assembly
AssigneeGeneral Electric Company
InventorsManoj Ramprasad Shah, Sameh Ramadan Salem, Ronald Irving Longwell
Life of this patent
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Abstract
A power generator that operates at a reduced temperature level includes a flux shunt that reduces the amount of fringing magnetic flux axially impinging upon a stator, flange, and multiple keybars during operation of the generator. By reducing the amount of axially impinging flux, the flux shunt reduces an operating temperature of the stator and flange and reduces a voltage differential between keybar voltages induced by the flux in the multiple keybars.
Claims21
A flux shunt for use in a power generator comprising a stator having a stator core and a rotor rotatably disposed within the stator, the flux shunt comprising:
- a convex outer surface adapted to be disposed adjacent to a radial inner surface of the stator core;
- and
- a concave inner surface adapted to be disposed adjacent to a radial outer surface of the rotor;
- wherein the flux shunt attracts fringing magnetic flux in a power generator and wherein a permeability of the flux shunt is greater than a permeability of the stator core.
A power generator stator assembly comprising:
- a substantially cylindrical stator core comprising a radial inner surface, an outer surface, and two ends;
- and
- a flux shunt having a convex outer surface, the convex outer surface disposed adjacent to the inner surface of the stator core, the flux shunt disposed at one end of the two ends of the stator core, wherein a permeability of the flux shunt is greater than a permeability of the stator core.
A power generator comprising:
- an approximately cylindrically-shaped stator comprising a stator core, a radial inner surface, an outer surface, and two ends;
- a flux shunt radially disposed adjacent to the inner surface of the stator at approximately an end of the two ends of the stator, and
- a rotor rotatably disposed inside of the stator;
- wherein a rotation of the rotor causes an induction of a magnetic flux that is greater than the magnetic flux that would be induced in the absence of the flux shunt.
A power generator stator assembly comprising:
- a stator core having a radial inner surface;
- and
- a flux shunt formed from an electrically resistive, thermally conductive, and magnetically permeable material, the flux shunt having a convex outer surface disposed adjacent to the radial inner surface of the stator core.
Dependencies are inferred from the claim text.