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Energies 2015, 8(5), 4300-4316; doi:10.3390/en8054300

Fault Diagnosis and Fault-Tolerant Control of Wind Turbines via a Discrete Time Controller with a Disturbance Compensator

Control Dynamics and Applications Research Group (CoDAlab), Barcelona College of Industrial Engineering, Polytechnic University of Catalonia, Comte d'Urgell, 187, Barcelona 08036, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 13 March 2015 / Revised: 13 April 2015 / Accepted: 4 May 2015 / Published: 12 May 2015
(This article belongs to the Special Issue Wind Turbines)
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Abstract

This paper develops a fault diagnosis (FD) and fault-tolerant control (FTC) of pitch actuators in wind turbines. This is accomplished by combining a disturbance compensator with a controller, both of which are formulated in the discrete time domain. The disturbance compensator has a dual purpose: to estimate the actuator fault (which is used by the FD algorithm) and to design the discrete time controller to obtain an FTC. That is, the pitch actuator faults are estimated, and then, the pitch control laws are appropriately modified to achieve an FTC with a comparable behavior to the fault-free case. The performance of the FD and FTC schemes is tested in simulations with the aero-elastic code FAST. View Full-Text
Keywords: fault diagnosis; fault detection; fault isolation; fault-tolerant-control; discrete time; disturbance compensator; FAST fault diagnosis; fault detection; fault isolation; fault-tolerant-control; discrete time; disturbance compensator; FAST
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Vidal, Y.; Tutivén, C.; Rodellar, J.; Acho, L. Fault Diagnosis and Fault-Tolerant Control of Wind Turbines via a Discrete Time Controller with a Disturbance Compensator. Energies 2015, 8, 4300-4316.

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