Systems and methods for air gap and eccentricity detection for electric motor
AssigneeGM Global Technology Operations LLC
InventorsJohn S. AGAPIOU, Anmol AGGARWAL, Sean Robert WAGNER
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Abstract
An eccentricity detection system includes: a vibration eccentricity module configured to determine a vibration eccentricity of the electric motor based on vibration of the electric motor measured during operation of the motor; an inductance eccentricity module configured to determine an inductance eccentricity of the electric motor based on an incremental inductance curve of the electric motor; and a fault module configured to indicate whether the electric motor includes an eccentricity fault based on both (a) the vibration eccentricity of the electric motor and (b) the inductance eccentricity of the electric motor.
Claims20
An eccentricity detection system comprising:
- a vibration eccentricity module configured to determine a vibration eccentricity of the electric motor based on vibration of the electric motor measured during operation of the motor;
- an inductance eccentricity module configured to determine an inductance eccentricity of the electric motor based on an incremental inductance curve of the electric motor;
- and
- a fault module configured to indicate whether the electric motor includes an eccentricity fault based on both (a) the vibration eccentricity of the electric motor and (b) the inductance eccentricity of the electric motor.
An eccentricity detection method comprising:
- determining a vibration eccentricity of the electric motor based on vibration of the electric motor measured during operation of the motor;
- determining an inductance eccentricity of the electric motor based on an incremental inductance curve of the electric motor;
- and
- indicating whether the electric motor includes an eccentricity fault based on both (a) the vibration eccentricity of the electric motor and (b) the inductance eccentricity of the electric motor.
Dependencies are inferred from the claim text.