NDLI: Fault-tolerant Control of a Wind Turbine with a Squirrel-cage Induction Generator and Rotor Bar Defects

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Fault-tolerant Control of a Wind Turbine with a Squirrel-cage Induction Generator and Rotor Bar Defects

Content Provider	Taylor & Francis Online
Author	Joksimović, Gojko Lešić, Vinko Perić, Nedjeljko Wolbank, Thomas M. Vašak, Mario
Abstract	Wind turbines are usually installed on remote locations and in order to increase their economic competence malfunctions should be reduced and prevented. Faults of wind turbine generator electromechanical parts are common and very expensive. This paper proposes a fault-tolerant control strategy for variable-speed variable-pitch wind turbines in case of identified and characterised squirrel-cage generator rotor bar defect. An upgrade of the torque control loop with flux-angle-based torque modulation is proposed. In order to avoid or to postpone generator cage defects, usage of pitch controller in the low wind speed region is introduced. Presented fault-tolerant control strategy is developed taking into account its modular implementation and installation in available control systems of existing wind turbines to extend their life cycle and energy production. Practical implementation aspects such as estimation of variables used in control and estimate errors are considered and respected in operation, as well as fault-induced asymmetries. Simulation results for the case of a megawatt class wind turbine and the identified rotor bar fault are presented.
Starting Page	316
Ending Page	328
Page Count	13
File Format	PDF HTM / HTML
ISSN	00051144 18483380
DOI	10.7305/automatika.54-3.189
Journal	Automatika
Volume Number	54
Issue Number	3
Language	English
Publisher	Taylor & Francis
Publisher Date	2017-01-20
Access Restriction	Open
Subject Keyword	Wind turbine control Torque control Generator fault-tolerant control Nonlinear estimation Asymmetric field-oriented control Upravljanje vjetroagregatom Upravljanje momentom Upravljanje otporno na kvarove generatora Nelinearna estimacija Vektorsko upravljanje nesimetričnog stroja
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Computer Science

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