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Fractional‐order fault‐tolerant pitch control design for a 2.5 MW wind turbine subject to actuator faults
Author(s) -
Noshirvani Gholamreza,
Askari Javad,
Fekih Afef
Publication year - 2019
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.2411
Subject(s) - control theory (sociology) , actuator , robustness (evolution) , turbine , kalman filter , engineering , terminal sliding mode , blade pitch , fault tolerance , sliding mode control , control engineering , computer science , control (management) , mechanical engineering , biochemistry , chemistry , physics , electrical engineering , nonlinear system , quantum mechanics , artificial intelligence , reliability engineering , gene
Summary This paper proposes an active fault‐tolerant pitch control design for a 2.5 MW wind turbine. The proposed scheme combines the robustness properties of fractional‐order terminal sliding mode control with the accurate estimation of virtual actuators. Its main objective is to enable the wind turbine to retain its nominal pitching performance under faulty conditions whereas simultaneously attenuating chattering. The fault detection scheme implements a bank of modified unscented Kalman filters. The proposed approach was implemented to a 2.5‐MW wind turbine subject to pitch actuator faults and sensor noise. Its performance was compared with that of an integer‐order terminal sliding mode approach. Guaranteeing the finite time stability of the pitching system under faulty conditions whereas alleviating the chattering phenomena are among the positive features of the proposed fractional‐order fault‐tolerant pitch control design.