Étude et commande d’une machine asynchrone a double alimentation application : energie eolienne

Abstract

In this thesis, we expose the study of a wind system with a doubly fed induction generator driven by avariable pitch wind turbine. The first chapter presented a state of the art on the wind mills, the various structures of feeding and the type of generator used, we chose the asynchronous machine with double power supply controlled through the rotor variables. The modeling of the asynchronous machine with double power is detailed in the second chapter. Thethird and the fourth chapter are dedicated to the modeling and the control of the active and reactive powers of the DFIG using two different strategies, then we are interested in cascades based on an asynchronous machine with double power supply and two levels converters. Lastly, we made a control of a whole chain of wind conversion by applying an MPPT algorithm to optimize the energetic efficiency of the wind chain. The results obtained with simulation allowed the performance evaluation of the application of the asynchronous machine double power supply in the wind field.