Diagnostics de la machine asynchrone a double alimentation en regime de court-circuit intégrée à une chaine éolienne

Abstract

This work treats modeling, the control and the simulation of an electromechanical conversion system of electrical energy containing a double fed induction machine connected directly to the grid by the stator and controlled by its rotor via a matrix converter controlled by technique MLI to calculate. The idea consists in implementing a control system uncoupled from the powers active and reactive power generated by the stator of the machine, in order to ensure of high efficiencies and a better execution. One integrate the system double fed induction machine-matrix converter in a Wind turbine, In order to maximize its extracted power, method MPPT (Maximum Power Point Alignment) is implemented to obtain the reference of the active power to the stator relating to the maximum power provided by the wind mill for a mode of the wind. The second part of this work’s been devoted on DFIG diagnosis knowing short-circuit faults then being connected to a wind channel and a performant command over. Key- words: Double fed induction machine, matrix converter, Strategy of calculated modulation PWM, order by decoupling of the active and reactive power, wind, MPPT