Signatures of electromechanical faults in stress distribution and vibration of induction motors

P. V. Jover Rodriguez, A. Belahcen, Antti Laiho, E. Resina, A. Arkkio

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)

Abstract

This paper develops a method for determining the signatures of electromechanical faults in the airgap stress distribution and stator vibration of induction machines. Two types of induction motors are analyzed; a 2-pole pairs, star connected and an 1-pole pair, delta connected motor. The radial electromagnetic stress distribution along the airgap is calculated and developed into double Fourier series in space and time. The computations show the existence of low frequency and low order stress distributions acting on the stator of the electrical machine when it is working under faulty conditions. These stress waves are able to produce forced vibration in the stator surface. The simulation results are corroborated by vibration measurements. Modal testing is also carried out to determine the natural frequencies. The measurements and simulations show that low frequency components of the vibrations can be used as identifiable signatures for condition monitoring of induction motors. The patterns presented by the faults allow to discriminate between them.
Original languageEnglish
Title of host publication2007 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages167-172
ISBN (Electronic)978-1-4244-1062-0
ISBN (Print)978-1-4244-1061-3
DOIs
Publication statusPublished - 2007
MoE publication typeA4 Article in a conference publication
Event2007 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED - Cracow, Poland
Duration: 6 Sep 20078 Sep 2007

Conference

Conference2007 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED
Country/TerritoryPoland
CityCracow
Period6/09/078/09/07

Keywords

  • Fault
  • Finite element method
  • Fourier series
  • Induction motor
  • Modal testing
  • Stress
  • Vibration

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