Journal of Electrical Engineering : Volume 17 / 2017 - Edition : 4

A NEW ROBUST CONTROL USING ADAPTIVE FUZZY SLIDING MODE CONTROL FOR A DFIG SUPPLIED BY A SEVEN-LEVEL INVERTER

Authors:
Mohamed BENKAHLA
Rachid TALEB
Zinelaabidine BOUDJEMA
Domain:
electrical machines and drives
Abstract:
This article presents the powers control of a variable speed wind turbine (WT) based on a doubly fed induction generator (DFIG) because of their advantages in terms of economy and control. The considered system consists of a DFIG whose stator is connected directly to the electrical network and its rotor is supplied by a seven-level inverter with structure NPC are well used to minimize the harmonics absorbed by the DFIG, reducing switching frequency, high power electronic applications because of their ability to generate a very good quality of waveforms, and their low voltage stress across the power devices. In order to control independently active and reactive powers provided by the stator side of the DFIG to the grid and ensure high performance and a better execution, three types of robust controllers have been studied and compared in terms of power reference tracking, response to sudden speed variations, sensitivity to perturbations and robustness against machine parameters variations.
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