A Comparative Analysis of Two Rotor Broken Bars/Rotor Faults Diagnosis Methods and the Influence of These Faults on Induction Motors Operating Parameters

Abstract

Rotor’s integrity diagnosis is difficult and for induction motors producers represents a challenge, because they usually detect faults at the end of the manufacturing process which involves both material and labor loss. In this paper a comparative analysis of two rotor faults diagnosis methods and the influence of these faults on low voltage induction motors operating parameters were performed in order to establish the need of using each of these methods before the final motor testing on the production line. As samples were considered three identical rotors with a total of 22 bars, and a prototype stator designed for motors with rated power of 0.37 kW and speed of 1500 rpm.