A Digital Twin Design of Induction Motor With Squirrel-Cage Rotor for Insulation Condition Prediction

Abstract

The purpose of this paper is to develop a digital twin of induction motor with a squirrelcage rotor. The problem of efficient operation of electric motors is primarily related to the reliability of insulation. Meanwhile, there is no such device that could show the operator at least an approximate value of the insulation resource on the display and warn about possible emergency situations when the current loads of the windings of the electric machine increase. To solve this problem, you can use modern technology based on Digital Twins. The paper analyzes existing developments in this area and draws conclusions about research directions. The construction of a reducedorder model (ROM) for an induction motor with a squirrel-cage rotor and the layout structure of the blocks of such a model in ANSYS Twin Builder are shown. As input data for the model, archival records of laboratory studies of readings of stator winding currents, rotation speed, temperature, torque on the shaft and others, which were kept from the built laboratory stand, were used. The simulation results indicate the acceptable accuracy of the obtained results, which indicates the possibility of using the developed digital twin of the induction motor both for further deeper research and improvement, and for experimental developments.