Comprehensive Eccentricity Fault Diagnosis in Induction Motors Using Finite Element Method

• Published in: IEEE transactions on magnetics Vol. 45; no. 3; pp. 1764 - 1767
• Main Authors: Faiz, J., Ebrahimi, B.M., Akin, B., Toliyat, H.A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.03.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Air gaps; Analytical models; Cross-disciplinary physics: materials science; rheology; Dynamics; Eccentricity; Exact sciences and technology; Fault diagnosis; Faults; Finite element method; Finite element methods; Frequency; induction motor; Induction motors; Load management; load variation; Loads (forces); Magnetism; Materials science; Mathematical analysis; Other topics in materials science; Physics; Rotors; Signatures; static and dynamic eccentricities; Stators; time-stepping finite element (TSFE); USA Councils; Finite element method; Fault diagnosis; Induction motors; time-stepping finite element (TSFE); Eccentricity; induction motor; Variable load; Induction machine; static and dynamic eccentricities; Modelling; load variation; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2009.2012812

Load variation along with static and dynamic eccentricities degrees is one of the major factors directly affecting the dynamic behaviors of eccentricity signatures as observed in the current spectrum of induction motors. Without taking the effect of load variation into consideration precisely, the change in the static and dynamic related fault signature amplitudes provides misleading information where the eccentricity degree and the load level exhibit similar effects in the current spectrum. In this paper, we address all these factors in a unified framework by analyzing various combinations both theoretically and experimentally. For this purpose, the time-stepping finite element method (TSFEM)-based, load-level-independent method is proposed to determine the static and dynamic eccentricities degrees individually.