Quasi Type-1 PLL With Tunable Phase Detector for Unbalanced and Distorted Three-Phase Grid

International audienc

A Robust Half-Cycle Single-Phase Prefiltered Open-Loop Frequency Estimator for Fast Tracking of Amplitude and Phase

International audienc

Analysis, simulation and experimental strategies of 5-phase permanent magnet motor control

International audienc

A New Control Strategy of 5-Phase PM Motor under Open-Circuited Phase Based on High Order Sliding Mode and Current References Real-Time Generation

International audienc

Contribution à la modélisation multiphysique et à la commande des systèmes de récupérations des énergies des courants marins (les hydrolliennes)

In this thesis, a Matlab/Simulink®-based simulation tool for marine current turbines has been proposed. For that purpose, a multiphysic approach has been adopted to model the whole system, including the resource, the rotor, the gearbox and, the generator. The developed tool can evaluate a marine current turbine performances and dynamic loads over different operating conditions. Moreover, it should be used to quantity the potential for generating electricity from these various sites and therefore evaluate their cost-effectiveness. Indeed, it has been applied to assess the extractable power from the Raz de Sein. In this case, tidal current data from the Raz de Sein have been used to run the simulation models over various flow regimes and yield the power capture with time. The obtained results were consistent and very promising.Les travaux développés durant la thèse, ont permis la mise au point d un simulateur qui permet de prévoir le comportement dune hydrolienne dans son environnement. A cet effet, une approche multiphysique a été adoptée pour la modélisation de l ensemble de la chatne de conversion d énergie. L environnement de simulation ainsi développé peut également être utilisé pour le dimensionnement et l évaluation de la rentabilité d installations hydroliennes. A l heure actuelle, l outil développé permet de simuler tous les types de turbines à axe horizontal. De plus, il permet de choisir entre deux topologies électriques différentes; une basée sur la génératrice asynchrone à double alimentation et une sur la génératrice synchrone à aimants permanents. Pour ces deux technologies, deux types de commande en vitesse ont été proposés. La première stratégie consacre l utilisation des régulateurs linéaires PI. La deuxième, quant à elle, propose une commande non linéaire dite modes glissants d ordre supérieur . Les différents composants du simulateur ont été testés et éprouvés expérimentalement en termes de modèles et en ternies de performances de régulations de vitesse. Les développements présentés dans ce mémoire restent cependant perfectibles ouvrant ainsi la voie à d intéressantes perspectives.BREST-BU Droit-Sciences-Sports (290192103) / SudocSudocFranceF

Selecting and optimal sizing of hybridized energy storage systems for tidal energy integration into power grid

Abstract The high penetration of renewable energy systems with fluctuating power generation into the electric grids affects considerably the electric power quality and supply reliability. Therefore, energy storage resources are used to deal with the challenges imposed by power variability and demand-supply balance. The main focus of this paper is to investigate the appropriate storage technologies and the capacity needed for a successful tidal power integration. Therefore, a simplified sizing method, integrating an energy management strategy, is proposed. This method allows the selection of the adequate storage technologies and determines the required least-cost storage capacity by considering their technological limits associated with different power dynamics. The optimal solutions given by the multi-objective evolutionary algorithm are presented and analyzed

Energy management for hybrid energy storage systems: a comparison of current tracking control methods

International audienceIn order to correctly implement an energy management strategy for a multi-source system, the output currents of different sources should be regulated to the desired references precisely and rapidly. In this paper, the underlying control of hybrid energy storage system composed by battery and supercapacitor is presented. Three current tracking controllers, PID, sliding mode, and fuzzy logic, are designed for the proposed system. Then, the control performances of the three controllers are compared according to the control precision, feasible control parameter range, and robustness to input voltage variation. The comparison is realized by carrying out a series of simulations

Robust Active Fault Tolerant Control for Five-Phase PMSM against Speed Sensor Failures

International audienc