System and method for determining pole shift

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United States of America Patent

PATENT NO 8912766
SERIAL NO

13763612

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A generator airgap monitoring system includes a first proximity sensor disposed in a first location of a stator and configured to transmit a first signal representative of a first distance between the first proximity sensor and a plurality of rotor poles of a rotor, and a controller communicatively coupled to the first proximity sensor. The controller is configured to derive a first plurality of instantaneous airgaps based on the first signal and to determine a difference between a first instantaneous airgap of the first plurality of instantaneous airgaps and a second instantaneous airgap of the first plurality of instantaneous airgaps. The first plurality of instantaneous airgaps includes a first plurality of measurements of airgaps between the stator and the plurality of rotor poles when the rotor is rotating. The first instantaneous airgap and the second instantaneous airgaps include measurements for respective rotor poles.

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Patent Owner(s)

  • GENERAL ELECTRIC COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grant, John Wesley Gardnerville, US 22 274
Jensen, Raymond Verle Gardnerville, US 17 180

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