Adaptive Robust Fault-Tolerant Control Design for Wind Turbines Subject to Pitch Actuator Faults

This paper proposes an adaptive fault tolerant control (FTC) design for a variable speed wind turbine (WT) operating in the high speeds region. It aims at mitigating pitch actuator faults and regulating generator power to its rated value, thereby reducing mechanical stress The proposed FTC implements sliding mode (SMC) approach with adaptation law that estimates upper bounds of uncertainties. System stability uniform boundedness outputs was proven using Lyapunov theory. validated on 5 MW three-blade modeled National Renewable Energy Laboratory’s (NREL) Fatigue, Aerodynamics, Structures Turbulence (FAST) simulator. controller’s performance assessed presence several turbulent conditions. Its also compared standard SMC approach. Mitigation blade faults, generation power, smoother pitching actions reduced chattering are among main features design.