Stability Analysis of a Wind Turbine Controlled by Direct Torque Control

Djamel Ikni and Elena Raducan ()
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Djamel Ikni: Sustainable-Dev Lab, 4 AV 18 RI, 64000 Pau, France
Elena Raducan: Department of Automation and Electrical Engineering, University of Dunarea de Jos Galati, 800146 Galati, Romania

Energies, 2024, vol. 17, issue 11, 1-20

Abstract: Increasingly, electricity network managers, through their grid codes, require renewable energy production systems to participate in system services, which includes requirements such as the stability of these production systems, the quality of the energy injected into the networks, the ability to withstand voltage dips, etc. To meet these requirements, the use of appropriate commands for the control of the production systems is necessary. Various control methods have been proposed, among which direct torque control (DTC) stands out. However, several studies have highlighted the impact of parametric variations on this control method. The contribution of the work presented in this article is the improvement of DTC when combined with a fuzzy estimate applied to a wind production system based on an asynchronous machine. Robustness tests were simulated to highlight the sensitivity of this control to variations in the stator resistance of asynchronous machines. To make this command robust and stable, a fuzzy estimator was used with this command. The simulation results demonstrated that this combination (DTC with a fuzzy estimator) makes the wind system more stable. To assess the effectiveness of the proposed solution, the root mean square error index was used.

Keywords: renewable energy; wind turbine; direct torque control; fuzzy estimator; asynchronous machine; electrical grid (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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