Étude des performances et commande d’une machine synchrone à aimants permanents utilisée dans les éoliennes

Abstract

This work presents a variable speed wind chain based on permanent magnet synchronous generator (PMSG), some improvements of the chain performances are realized thanks to the exploitation of the (PMSG) characteristics, and the choice of a simplified structure which enables us to eliminate the gearbox to offer a compromise cost - reliability – performance. The efficiency of this structure is largely improved by (MPPT) strategies development of the turbine making it possible to maximize the collected power of wind. All the chain of wind conversion is studied, modeled, controlled and simulated: the turbine then the PMSG, PWM rectifier, at list, the three-phase inverter which is controlled in a way to inject the power transmitted to the network with a power-factor closer to the unit. Lastly, tests variations and modifications of the parameters are affected to test their effects on the control sensitivity on the one hand, and to discover the performances of the wind chain on the injected power on the other hand. The obtained simulation results are commented and satisfactory, they describe the behaviours of this type of the used technology to produce electricity.