Performance Evaluation and Thermal Fields Analysis of Induction Motor With Broken Rotor Bars Located at Different Relative Positions

In this paper, the influences of broken bars located at different relative positions in an induction motor are presented. In this investigation, a finite-element model of the squirrel-cage induction motor is developed. Both thermal and electromagnetic analysis of the induction motor operating in conditions of healthy and broken bars fault are carried out, and operating performance and thermal fields with two broken rotor bars located at different relative positions are studied. The accuracy of simulation is verified by experimental results derived from a prototype. From the results, some valuable ideas can be proposed to the broken bars' fault diagnosis.