A Hybrid H∞-MRAS Observer of Wind Turbines Conversion Systems based on DFIG

  • Lakhdar SAIHI Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, 01000, Adrar, Algeria,
  • Youcef Bakou Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, 01000, Adrar, Algeria,
  • Fateh Ferroudji Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, 01000, Adrar, Algeria,
  • Abdelkader Hadidi Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, 01000, Adrar, Algeria,
  • Ibrahim Oulimar Unité de Recherche en Energies Renouvelables en Milieu Saharien URERMS, Centre de Développement des Energies Renouvelables CDER, 01000, Adrar, Algeria,
Keywords: Sensor-less Control Advanced Frequency Control (Robust H∞ control), Doubly Fed Induction Generator (DFIG), H∞-MRAS observer.

Abstract

This study proposes the robust sensor-less advanced frequency control (robust H∞ control) of the system of wind turbine based on a doubly fed induction generator (DFIG), the power exchange between the machine stator and the network is achieved by applying the rotor of DFIG via a bidirectional converter. The purpose of the control is to regulate the stator active and reactive power produced by the DFIG using a robust H∞ controller. The Model reference and adaptive system (MRAS-Observer) uses the error between the actual and estimated values ​​(voltage/current) to construct the observed mechanical parameters (speed and position) value, this technique uses two separate models: the first is the reference model, the second is the adjustable mode. The error between these models is used by the adaptive mechanism. The adjustment mechanism is mostly a PI controller, to improve the performance and robustness of the classical MRAS observer, we replace the classical PI controller with a robust H∞ controller. The results simulations confirm the robustness of the sensorless robust H∞ control using the H∞-MRAS observer compared to conventional MRAS, which improves the quality and quantity of generated power.

Published
2022-06-15
How to Cite
SAIHIL., BakouY., Ferroudji F., HadidiA., & Oulimar I. (2022). A Hybrid H∞-MRAS Observer of Wind Turbines Conversion Systems based on DFIG. Algerian Journal of Renewable Energy and Sustainable Development, 4(01), 101-110. https://doi.org/10.46657/ajresd.2022.4.1.10
Section
Articles