Induction Motors Bearing Failures Detection and Diagnosis: Park and Concordia Transform Approaches Comparative Study

This paper deals with the problem of bearing failure detection and diagnosis in induction motors. Indeed, bearings deterioration is now the main cause of induction motor rotor failures. In this context, two fault detection and diagnosis techniques, namely the Park transform approach and the Concordia transform, are briefly presented and compared. Experimental tests, on a 0.75-kW two-pole induction motor with artificial bearing damages, outline the above approaches main features for small and medium size induction motors bearing failure detection and/or diagnosis.