Stabilization of Large Power Systems Using VSC–HVDC and Fuzzy Anti-Windup Subject to Input Constraints

Abstract

This paper considers the robust stabilization problem for Takagi-Sugeno (TS) fuzzy systems subject to input saturation. The purpose is the design of fuzzy controllers based on fuzzy anti-windup ensuring convergence of all admissible initial states within the domain of attraction. The effectiveness of the proposed controller is demonstrated through two closed-connected High Voltage Direct Current (HVDC) lines studies using MATLAB/SIMULINK software package. The simulation results show that the proposed controller contribute significantly toward improving the damping behavior of the Voltage Source Converter (VSC)-HVDC system with regard to parameter variations and external load disturbances compared with alternative frameworks existing in the literature under a wide range of operating conditions.

Keywords:

• AC grid structure
• control contraints
• nonlinear control
• fault-ride-through
• VSC-HVDC
• fuzzy control
• robust control
• parameter uncertainties
• disturbance
• anti-windup
• LMI approach
• large power systems
• Takagi-Sugeno fuzzy model

Additional information

Notes on contributors

Elkhatib Kamal

Elkhatib Kamal received the B.Sc. and M.Sc. degrees Industrial Electronics Engineering &Automatic Control Engineering from Menoufia University, Egypt, in 2002 and 2007, respectively, and the Ph.D. degree in Electrical Engineering & Automatic Control Engineering from the Laboratoire de recherche CRIStAL UMR 9189: Centre de Recherche en Informatique, Signal et Automatique de Lille, Universite des Sciences et Technologies de Lille, France, in 2013. Since 2015, he has been an Assistant Professor with the Department of Industrial Electronics and Control Engineering, Menoufia University, Menouf, Egypt. His research interests include analysis and design of intelligent control systems such as fuzzy control, neuro fuzzy control, robust control, fault-tolerant control, model-based fault detection and diagnosis with their applications in renewable energy and hybrid vehicle. He has authored/coauthored several publications in these areas. His current research interests are in the operation of distribution system, power quality, power system optimization in the context of smart grids.