NDLI: Detection of rotor electrical asymmetry in wind turbine doubly-fed induction generators

Content Provider	IET Digital Library
Author	Zaggout, Mahmoud Tavner, Peter Crabtree, Christopher Ran, Li
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.
Starting Page	878
Ending Page	886
Page Count	9
ISSN	17521416
Volume Number	8
e-ISSN	17521424
Issue Number	Issue 8, Nov (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/8/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2013.0324
Journal	IET Renewable Power Generation
Publisher	The Institution of Engineering and Technology
Publisher Date	2014-06-30
Access Restriction	Open
Rights License	Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Subject Keyword	Asynchronous Generator Asynchronous Machine Condition Monitoring Control Loop Signal Control of Electric Power System DFIG Condition Monitoring Doubly Fed Induction Generator Error Signal Fault Detection Sensitivity Enhancement Fault Diagnosis Fault Severity Invertors Machine Vector Control Rotor Electrical Asymmetry Fault Detection Rotor Side Inverter Control Loop Rotors Signal Processing And Detection Spectral Analysis Spectrum Analysis Stator Current Stator Field Oriented Vector Control Scheme Stator Power Stators Steady-state Operation Wind Power Plant Wind Turbine
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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Operation and design issues of a doubly fed induction generator stator connected to a dc net by a diode rectifier

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Hybrid modelling of doubly fed induction generators with inter-turn stator fault and its detection method using wavelet analysis

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SVD filtering and TLS-ESPRIT algorithm based on stator fault characteristic detection of doubly-fed induction generator

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