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Contribution à la commande résiliente aux défaillances des convertisseurs statiques et à la démagnétisation de la génératrice synchrone à aimants permanents d'une hydrolienne

Abstract : Nowadays, the exploitation of renewable energies in order to generate electricity is growing steadily because they are unlimited resources, free and don’t cause waste or polluting emissions. In this context, it is proposed to study one of these types of energy, which is marine currents energy. In particular, we are interested in fault-tolerant control of tidal turbines. The potential for power generation from marine currents is estimated at 100GW in the world. However, tidal turbines are submitted to severe operational and environmental constraints. These constraints inevitably will lead to these systems performance degradation and the acceleration of their aging process, thus leading to the occurrence of mechanical and/or electrical faults. The implementation of fault-tolerant control techniques will improve the tidal turbines reliability, performance, and reduce costs relating to maintenance operations. The aim of this thesis is to study, model, and simulate a tidal turbine system in healthy and faulty conditions (either in the converter (switch open circuit) or in the permanent magnet synchronous generator (magnet failure). Various fault-tolerant control approaches are therefore evaluated and compared under these specific failure It will therefore be necessary to study the various fault-tolerant controls used in the event of a fault in the generator or in the associated power electronics.
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Submitted on : Friday, May 18, 2018 - 12:12:06 PM
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Sana Toumi. Contribution à la commande résiliente aux défaillances des convertisseurs statiques et à la démagnétisation de la génératrice synchrone à aimants permanents d'une hydrolienne. Autre. Université de Bretagne occidentale - Brest; Ecole Nationale d'Ingénieurs de Sousse (Tunisie), 2017. Français. ⟨NNT : 2017BRES0120⟩. ⟨tel-01719762v2⟩

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