Cette thèse traite la modélisation, le contrôle et la simulation d’un système de conversion d’énergie éolienne à base d’une machine synchrone à aimants permanents (GSAP) connectée au réseau. Il est nécessaire de lier cette génératrice avec la charge ou le réseau par des convertisseurs statiques susceptibles d’améliorer la qualité d’énergie en tension et fréquence en utilisant des techniques adéquates de commande. L’étude consiste à implémenter des stratégies de contrôle pour assurer une meilleure qualité d’énergie. Après la modélisation de la cha{\^ıne de conversion d’énergie éolienne complète avec exploitation de la commande MPPT, une application de la commande directe du couple basée sur des régulateurs à hystérésis et la commande DTC-SVM sont introduites à la machine pour mettre en évidences les performances de ces dernières. D’après les résultats de simulation obtenus, la commande DTC-SVM présente de meilleures performances par rapport à la DTC classique et la commande vectorielle

This paper presents a comparative study between two strategies for the direct torque control (DTC) of the permanent magnet synchronous generator (PMSG) based on wind energy conversion system (WECS). The first method is a conventional direct torque control DTC and it is based on hysteresis controllers where the torque and the flux are regulated by these controllers. The second one is direct torque control by space vector modulation strategy (DTC-SVM) where the torque and flux are regulated by PI controllers. The simulation results are implemented by using MATLAB/SIMULINK. The main feature of the proposed (DTC-SVM) strategy is the reduction of torque and flux ripples. The proposed approach can be considered as an alternative solution to the control of PMSG.

This paper presents a comparative study between two strategies for the direct torque control (DTC) of the permanent magnet synchronous generator (PMSG) based on wind energy conversion system (WECS). The first method is a conventional direct torque control DTC and it is based on hysteresis controllers where the torque and the flux are regulated by these controllers. The second one is direct torque control by space vector modulation strategy (DTC-SVM) where the torque and flux are regulated by PI controllers. The simulation results are implemented by using MATLAB/SIMULINK. The main feature of the proposed (DTC-SVM) strategy is the reduction of torque and flux ripples. The proposed approach can be considered as an alternative solution to the control of PMSG.

This paper presents a comparative study between two strategies for the direct torque control (DTC) of the permanent magnet synchronous generator (PMSG) based on wind energy conversion system (WECS). The first method is a conventional direct torque control DTC and it is based on hysteresis controllers where the torque and the flux are regulated by these controllers. The second one is direct torque control by space vector modulation strategy (DTC-SVM) where the torque and flux are regulated by PI controllers. The simulation results are implemented by using MATLAB/SIMULINK. The main feature of the proposed (DTC-SVM) strategy is the reduction of torque and flux ripples. The proposed approach can be considered as an alternative solution to the control of PMSG.