DIRECT SLIDING MODE CONTROL OF DOUBLY FED INDUCTION GENERATOR DRIVEN BY A WIND TURBINE WITH A SVM INVERTER USING SIMULINK

摘要

A direct control of Doubly Fed Induction Generator (DFIG) driven by wind turbine fed by a Space Vector Modulation (SVM) with a variable structure control based on a Sliding Mode Controller (SMC) is presented in this paper. Our aim is to make the stator active and reactive power control track their reference variations. The use of the nonlinear sliding mode control gives very good active and reactive power performance when it applies to the DFIG. To improve the quality of energy injected into the electrical grid, we propose the SVM technique which allows the minimizing of stator current harmonics and wide linear modulation range. In addition, we present the implantation, step by step, of the SVM inverter under Matlab/Simulink software. Numerical simulation results and discussion are presented to validate the proposed control strategy. The results show that the SMC with SVM technique give a good quality of energy where the THD of the stator current of DFIG has small value (THD=4.38% <5% according IEEE Std 519-1992).