Detection of Stator and Rotor Winding Faults in Induction Motor using Park’s Vector Approach

Kuldeep Kumar Swarnkar; J. N. Rai; Sulochana Wadhwani

Abstract

The Induction Motors in every rotating machine’s heart and it’s a very important component in amuch. Almost 90 percent of the Induction Motor use in industry as a prime mover. So Induction Motoris necessary to Condition Monitoring for Economic Running Cost. Condition Based Monitoring ofInduction Motor has become an important and difficult task for Engineers and Researchers mainly inIndustrial applications. Several Condition Monitoring Methods (Technique) including Motor CurrentSignature Analysis Monitoring, Vibration Monitoring, Acoustic Emission Monitoring, Stray FluxAnalysis, Shock Pulse Monitoring, Instantaneous Output Power Variation Analysis, Thermograph butall of these techniques required expensive specialized tools and sensors where Motor CurrentSignature Analysis method does not necessary any expensive sensors. The Motor Current SignatureAnalysis technique helps to effectively diagnose faults such as Rotor and Stator winding, UnbalancedVoltage and Load Fault are all examples of faults. The Stator Current Park's vector analysis is aneasy and popular methodology for online discerns between healthy condition and faulty conditionInduction Motors and it also tells about different faults. In this paper, Park's vector Patterns of 3-phase stator current is analyzed for Stator and Rotor winging Fault of Induction Motor. In thepresence of multiple faults, the current in the supply stator contains sideband components, causingthe circular pattern to be distorted. A three-phase induction motor with 7.5 HP was used to test thistechnique. The simulation result validated the experimental analysis.