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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/22952

Title: Stator winding fault diagnosis in synchronous generators for wind turbine applications
Authors: Ibrahim, Raed Khalaf
Watson, Simon J.
Keywords: Wind turbine
Condition monitoring
Current signature
Fault signature
Fault detection
Issue Date: 2016
Publisher: IET
Citation: IBRAHIM, R.K. and WATSON, S.J., 2016. Stator winding fault diagnosis in synchronous generators for wind turbine applications. Presented at the International Conference on Renewable Power Generation (RPG 2016 ), IET London: Savoy Place, UK, 21-23rd Sept.
Abstract: Wind turbine manufacturers have introduced to the market a variety of innovative concepts and configurations for generators to maximize energy capture, reduce costs and improve reliability of wind energy. For the purpose of improving reliability and availability, a number of diagnostic methods have been developed. Stator current signature analysis (SCSA) is potentially an effective technique to diagnose faults in electrical machines, and could be used to detect and diagnose faults in wind turbines. In this study, an investigation was conducted into the application of SCSA to detect stator inter-turn faults in an excited synchronous generator and a permanent magnet synchronous generator. It was found from simulation results that, owing to disruption of magnetic field symmetry and imbalance between the current flowing in the shorted turn and the corresponding diametrically opposite turn in the winding, certain harmonic components in the stator current clearly increased as the number of shorted turns increased. The findings are helpful to detect faults involving only a few turns without ambiguity, in spite of the difference in the configuration of the generators. As expected, because of the different type, configuration and operational condition of the two generators studied, detecting faults through the generator current signature requires a particular approach for each generator type.
Description: This paper is a preprint of a paper presented at the 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) and is subject to Institution of Engineering and Technology Copyright. When the final version is published, the copy of record will be available at IET Digital Library
Version: Accepted
URI: https://dspace.lboro.ac.uk/2134/22952
Publisher Link: http://conferences.theiet.org/rpg-europe/index.cfm?utm_source=redirect&utm_medium=any&utm_campaign=rpg-europe
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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