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L’objectif de ce document est d’étudier et de développer un prototype capable de gérer les cellules d’un ensemble de batteries (charge-décharge-équilibrage-déconnexion) tout en générant une tension se rapprochant d’une forme sinusoïdale.
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This HDR (Habilitation à Diriger des Recherches) manuscript summarizes my research and teaching activities as an associate professor at ISEN Yncréa Ouest, Brest and a scientist researcher at Institut de Recherche Dupuy de Lôme, IRDL UMR CNRS 6027 since I defended my PhD thesis in November 2013. My research activities after the PhD are focused on renewable energy generation systems and their applications. More precisely, the focus has been made on marine renewable energy sources (specifically, marine currents turbine) modeling, control, and resilience improvement and DC/AC microgrids energy management. These research works can be summarized in three themes:
− Faults diagnosis of electrical machines and drives: The focus has been made on induction motors faults detection and diagnosis based on stator currents analysis. High resolution techniques and parametric spectral estimation techniques have been investigated for faults feature extraction. Moreover, generalized likelihood ratio test has been proposed for decision making. An experimental setup has been developed, which allows to prove the effectiveness of the developed approaches on bearing faults and both stator and rotor faults.
− Fault-tolerant control of electric machines and drives: application to marine renewable energy converters: In this research theme, research activities have been conducted in order to improve marine current turbine (MCT) resilience. Fault-tolerant control strategies have been proposed and performance demonstrated for both power converters and permanent magnets synchronous generator faults. Specifically, second-order sliding mode control has been implemented to improve MCT resilience to permanent magnets demagnetization, which may be due to harsh environment, high torque, and speed variations.
− Energy management system of hybrid power generation systems with high rate of renewables: This research area has focused on microgrid energy management systems development. Both DC and AC microgrids has been investigated. More precisely, an islanded marine microgrid has been proposed to supply Ouessant island in Brittany region in France. In fact, a microgrid composed of MCT, photovoltaic panels, battery energy storage system, and small-scale diesel generator has been proposed and an energy management system developed, which allows better energy scheduling while reducing CO2 emissions and fulfilling technical constraints (network constraints, voltage bounds, power balance, etc.).
