A Novel Approach for Detection of Shorted Turns Fault in Machine Using Combination of Flux and Instantaneous Power Signal

Abstract

In this paper, non-invasive multiple sensors for the detection of shorted turns fault have been used. The fault has been detected using fault frequency components from flux and instantaneous power and a single signal (combination of flux and instantaneous power signals) called power-flux over a wide range of loads. To achieve this task, stator winding of the machine was re-wounded with taps to introduce shorted turns fault. An extensive series of laboratory tests were conducted to examine the fault frequency amplitudes for the healthy motor and faulty motors with different shorted turns. Results based on the variations in the amplitude of sideband components between healthy and faulty motors versus different frequencies over a wide range of loading conditions from different signals have been analyzed experimentally in detail. Overall, this paper provides comprehensive detail to detect the shorted turn faults in machines using a novel combination of axial flux and instantaneous power signals into a single signal called power-flux.