Système éolien basé sur une MADA : contribution à l'étude de la qualité de l'énergie électrique et de la continuité de service

Abstract : Wind Energy Conversion Systems (WECS) will probably be intended, in a short term, to provide ancillary services such as reactive power compensation, as done by conventional generators of power plants and/or participate in improving electric power quality by filtering harmonic currents. Furthermore, by considering the increased installed wind power, connected to the grid, WECS will certainly ensure, in long term, the continuity of service following an electrical fault on the grid or on one of elements of the electromechanical conversion (power switches, sensors?) to ensure their reliability. In this thesis, we have studied in the first part a WECS based on Doubly Fed Induction Generator (DFIG) with an amplification gain between the stator and rotor currents. We have demonstrated that such a WECS can efficiently improving the electric power quality by compensating simultaneously reactive power and harmonic currents on the grid, without requiring any oversized elements in the electromechanical conversion chain. Then, we studied fault tolerant converter topologies and associated controls, ensuring the continuity of service in the presence of possible faults of a semiconductor or a current sensor. To minimize the time fault detection, we used an FPGA (Field Programmable Gate Array) to implement the fault tolerant controller. Simulation, "FPGA in the loop" prototyping and experimental results have validated the performances of the proposed methods and fault tolerant topologie
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Arnaud Gaillard. Système éolien basé sur une MADA : contribution à l'étude de la qualité de l'énergie électrique et de la continuité de service. Autre. Université Henri Poincaré - Nancy 1, 2010. Français. ⟨NNT : 2010NAN10023⟩. ⟨tel-01748204⟩

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