SYSTEMATIZATION AND SELECTION OF DIAGNOSING METHODS FOR THE STATOR WINDINGS INSULATION OF INDUCTION MOTORS
Keywords:Diagnostic methods, Failure statistics, Insulation damage, Stator winding, Types of defects, Induction motor, Turn-to-turn closures of stator, Simulation, Technical condition, Residual resource
Highlighted an extremely relevant problem of monitoring the insulation state of the stator windings of induction motors during operation. Improving the accuracy of diagnostics and the correct choice of method for assessing and predicting failure-free operation significantly increases the reliability of the equipment. The most damageable machine elements are the stator windings, where insulation faults are of prime importance. The work provides a classification of the causes of failures, insulation of windings of induction motors, and types of defects due to the reasons for their occurrence.
An analysis of the advantages and disadvantages of the most common in-practice methods for diagnosing the insulation of windings of induction motors during operation is given. The issues of using modeling to establish a diagnostic method are considered. The advantages and disadvantages of the considered methods are revealed, and a comparative characteristic is presented.
The work carried out the systematization and construction of a complex structural diagram linking the known types of insulation defects and methods for their determination. The resulting scheme contributes to the creation of diagnostic complexes that consider the combination of several methods for various types of defects and a rational approach to diagnostics for detecting damage at various stages of motor operation.
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