Detection of Simultaneous Mechanical Faults in 6 kV Pumping Induction Motors Using Combined MCSA and Stray Flux Methods

Konstantinos Gyftakis, Panagiotis Panagiotou, Dimitrios Spyrakis

Research output: Contribution to journalArticlepeer-review

Abstract

The popularity of stray and air-gap flux monitoring methods is increasing. This trend is justified by several advantages of such methods over the stator current monitoring that has been demonstrated for electrical faults detection in induction and synchronous machines. However, the use of the magnetic flux for mechanical faults detections has not drawn this much attention while in industry the vibration analysis continuous to be popular. This paper comes to bridge this gap via the detection of mechanical faults of 6 kV induction motors in a pumping station. The diagnostic procedure mainly involves the stator current and stray flux monitoring and harmonic index analysis. The localisation of the fault has been made possible via oscillometer readings. It will be shown that mechanical faults have very different impact on the stator current and the flux signals, while the flux is not sensitive to the bearing fault mechanisms.
Original languageEnglish
Pages (from-to)643-652
JournalIet electric power applications
Volume15
Issue number5
Early online date10 Mar 2021
DOIs
Publication statusPublished - 1 May 2021

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