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RSS FeedsEnergies, Vol. 12, Pages 2350: Fault-Tolerant Control for Actuator Faults of Wind Energy Conversion System (Energies)

 
 

19 june 2019 13:00:17

 
Energies, Vol. 12, Pages 2350: Fault-Tolerant Control for Actuator Faults of Wind Energy Conversion System (Energies)
 




The problem of robust fault-tolerant control for actuators of nonlinear systems with uncertain parameters is studied in this paper. Takagi–Sugeno (T-S) fuzzy model is used to describe the wind energy conversion system (WECS). Fuzzy dedicated observer (FDO) and fuzzy proportional integral observer (FPIO) are established to reconstruct the system state and actuator fault, respectively. Fuzzy Robust Scheduling Fault-Tolerant Controller (FRSFTC) is designed by parallel distributed compensation (PDC) method, so as to realize the purpose of active fault tolerance for actuator faults and ensure the robust stability of the system. The stability of the closed-loop system is proved by Taylor series, Lyapunov function, and Linear Matrix Inequalities (LMIs). Finally, the simulation results verify that the proposed method is feasible and effective applied to WECS with doubly fed induction generators (DFIG).


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