Off-line detection of static eccentricity in salient-pole synchronous machines

K. N. Gyftakis, C. A. Platero, S. Bernal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Since synchronous generators are the main electric power producing devices, it is crucial to guarantee their safe and reliable operation. However, faults may appear and inflict great losses. So, condition monitoring of such machines is critical to avoid unscheduled stops and unplanned maintenance. This paper works towards that direction. The authors are proposing a new off-line method to reliably detect the static eccentricity fault in synchronous salient pole electrical machines. The method is based on the monitoring of all three phase currents of the machine during locked rotor at three different rotor positions. A pseudo zero-sequence current is then calculated, the frequency spectrum of which can reveal reliable indicators to detect this fault. The proposed method has been tested experimentally with success, while the results indicate that it is possible to estimate the fault level severity.

Original languageEnglish
Title of host publicationProceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1919-1924
Number of pages6
ISBN (Electronic)9781538624777
DOIs
Publication statusPublished - 24 Oct 2018
Event23rd International Conference on Electrical Machines, ICEM 2018 - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018

Conference

Conference23rd International Conference on Electrical Machines, ICEM 2018
Country/TerritoryGreece
CityAlexandroupoli
Period3/09/186/09/18

Keywords

  • Condition monitoring
  • Eccentricity
  • Fault diagnosis
  • Salient-pole machines
  • Synchronous machines

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