Vibration Analysis of Induction Motors with Unbalanced Loads

One of the factors that cause the failure of induction motors which are used intensively in industry is the unbalanced loading of the motor. In this paper, a system to simulate the unbalanced load of a three-phase squirrel cage induction motor was designed. The unbalanced load vibrations were recorded with an accelerometer which was mounted on the motor housing. The vibrations signals were analyzed with Power Spectral Density (PSD). The results validates that the system can be used to simulate the unbalanced loading conditions of the induction motors.