Real-Time Identification of Distributed Bearing Faults in Induction Motor

This paper assesses the effectiveness and reliability of monitoring techniques for real-time fault detection in bearings of induction motor. The bearing failure modes and the characteristic bearing frequencies associated with the physical construction of the bearings are examined. Experimental results of vibration spectra with different faults are included, for a 7.5 kW cage induction motor, to demonstrate the effectiveness of the proposed scheme. Several ball bearings with known faults have been used in the experimental work.