Abstract
—In this article, a contribution to the fault diagnosis of a doubly fed induction generator for a closed-loop controlled wind turbine system associated with a two-level energy storage system using an on-line fault diagnostic technique is proposed. This technique is proposed to detect the rotor fault in the doubly fed induction generator under non-stationary conditions based on the spectral analysis of stator currents of the doubly fed induction generator by an adaptive fast Fourier transform algorithm. Furthermore, to prevent system deterioration, a fractional-order controller with a simple design method is used for the control of the whole wind turbine system. The fractional-order controller ensures that the system is stable in both healthy and faulty conditions. Additionally, to improve the production capacity under wind speed fluctuations and grid demand changes, a two-level energy storage system consisting of a supercapacitor bank and lead-acid batteries is proposed. The obtained simulation results show that the objectives of the fault diagnosis procedure and control strategy are reached.
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Notes on contributors
Issam Attoui
Issam Attoui was born in Annaba, Algeria, in 1985. He received his engineer degree and magister degree in electrical engineering from Badji Mokhtar-Annaba University, Algeria, in 2007 and 2009, respectively. In 2011, he joined the Welding and NDT Research Centre/Industrial Technologies Research Unit (URTI/CSC) in Annaba, Algeria. He is currently a Ph.D. student in Department of Electrical Engineering, Badji Mokhtar-Annaba University, Annaba, Algeria. His research interests include system modeling and control, process fault diagnosis, signal processing, renewable energy, vibration monitoring, fractional-order control, and neural networks.
Amar Omeiri
Amar Omeiri was born in Skikda, Algeria, in 1958. He received his engineer degree from Annaba University in 1983; his master degree of science by research from Strathclyde University, United Kingdom, in 1986; and his Ph.D. in 2007 from Annaba University, Algeria. Since 1987, he has been a lecturer at Annaba University in the Electrical Engineering Department. His current research field includes active power filters, renewable energies, power electronics, and AC and DC drives.