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

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


The Induction Motors in every rotating machine’s heart and it’s a very important component in a
much. Almost 90 percent of the Induction Motor use in industry as a prime mover. So Induction Motor
is necessary to Condition Monitoring for Economic Running Cost. Condition Based Monitoring of
Induction Motor has become an important and difficult task for Engineers and Researchers mainly in
Industrial applications. Several Condition Monitoring Methods (Technique) including Motor Current
Signature Analysis Monitoring, Vibration Monitoring, Acoustic Emission Monitoring, Stray Flux
Analysis, Shock Pulse Monitoring, Instantaneous Output Power Variation Analysis, Thermograph but
all of these techniques required expensive specialized tools and sensors where Motor Current
Signature Analysis method does not necessary any expensive sensors. The Motor Current Signature
Analysis technique helps to effectively diagnose faults such as Rotor and Stator winding, Unbalanced
Voltage and Load Fault are all examples of faults. The Stator Current Park's vector analysis is an
easy and popular methodology for online discerns between healthy condition and faulty condition
Induction 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 the
presence of multiple faults, the current in the supply stator contains sideband components, causing
the circular pattern to be distorted. A three-phase induction motor with 7.5 HP was used to test this
technique. The simulation result validated the experimental analysis.

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