Analysis of load and unbalance voltage on air gap eccentricity in detection of three phase induction motor

Abstract

Three-phase induction motor is a motor that has been widely used in large factories in general, in addition to efficient in terms of price, and maintenance. However, some cases, the induction motors are easy to damage, one of which is the occurrence of air gap imbalance. The cause of air gap distance between the rotor and stator is not uniform or synchronize is called eccentricity. To prevent sustained damage, this research is done in order to detect errors or damage early. As a result, the researchers tried in the effect of load and an unbalanced voltage to observe the condition of three phase induction motor with current spectrum or current signature with an air gap eccentricity condition and focused on static eccentricity conditions. The results of this data will be processed by using methods such as Fast Fourier Transform (FFT). For current signature seen at steady state condition, it will be able to tell whether the condition of the motor is normal or not.