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Detection of rotor electrical asymmetry in wind turbine doubly-fed induction generators
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Zaggout, Mahmoud, Ran, Li, Tavner, Peter J. and Crabtree, Christopher (2014) Detection of rotor electrical asymmetry in wind turbine doubly-fed induction generators. IET Renewable Power Generation, Volume 8 (Number 8). pp. 878-886. doi:10.1049/iet-rpg.2013.0324 ISSN 1752-1424.
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Official URL: http://dx.doi.org/10.1049/iet-rpg.2013.0324
Abstract
This study presents a new technique for detecting rotor electrical faults in wind turbine doubly-fed induction generators (DFIGs), controlled by a stator field-oriented vector control scheme. This is a novel method aimed at detecting and identifying rotor electrical asymmetry faults from within the rotor-side inverter control loop, using the error signal, to provide a future method of generator condition monitoring with enhanced detection sensitivity. Simulation and experimental measurements of the proposed signals were carried out under steady-state operation for both healthy and faulty generator conditions. Stator current and power were also investigated for rotor electrical asymmetry detection and comparison made with rotor-side inverter control signals. An investigation was then performed to define the sensitivity of the proposed monitoring signals to fault severity changes and a comparison made with previous current, power and vibration signal methods. The results confirm that a simple spectrum analysis of the proposed control loop signals gives effective and sensitive DFIG rotor electrical asymmetry detection.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TJ Mechanical engineering and machinery | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Wind turbines -- Technology, Failure analysis (Engineering) , Electric machinery -- Rotors | ||||||||
Journal or Publication Title: | IET Renewable Power Generation | ||||||||
Publisher: | The Institution of Engineering and Technology | ||||||||
ISSN: | 1752-1424 | ||||||||
Official Date: | 30 June 2014 | ||||||||
Dates: |
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Volume: | Volume 8 | ||||||||
Number: | Number 8 | ||||||||
Number of Pages: | 9 | ||||||||
Page Range: | pp. 878-886 | ||||||||
DOI: | 10.1049/iet-rpg.2013.0324 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), Libya. Government. PhD scholarships | ||||||||
Grant number: | EP/D034566/1 | ||||||||
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