G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 31/34 (2006.01)
Patent
CA 2086641
In order to determine the occurrence of a stator fault in an induction motor during operation of the motor, the axial leakage flux is monitored during operation of the motor. The occurrence of a stator fault is detected by observing a change in selected harmonic components of the axial leakage. The angular position of the fault with respect to a datum position is determined by noting and recording changes in the axial leakage flux at a plurality of positions distributed symmetrically around the axis of the motor and computing the angular position by triangulation. The axial leakage flux is detected by individual search coils located at said plurality of positions.
Cette invention concerne un moyen de détecter un défaut au stator d'un moteur à induction en service par le contrôle des flux de fuite axiale. Un défaut au stator se manifeste par une variation d'éléments harmoniques choisis de la fuite axiale. La position angulaire du défaut par rapport à un point repère est déterminée en notant et enregistrant les variations de flux de fuite axiale à une pluralité de points distribués symétriquement autour de l'axe du moteur et calculant la postion angulaire par triangulation. Le flux de fuite axiale est détecté par des bobines détectrices disposées à chacun des points susmentionnés.
Lloyd Blake A.
Penman James
Sedding Howard G.
Kinectrics Inc.
Ridout & Maybee Llp
LandOfFree
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