Active fault tolerant control through sparse recovery diagnosis

This paper deals with the design of an active fault-tolerant control for a twin wind turbine consisting of two wind turbines mounted on the same tower. When one turbine is influenced by electrical faults, precisely a stator inter-turn short circuits fault or a demagnetization fault, the sparse recovery diagnosis method is used for the detection, isolation and estimation of the active fault. An active fault-tolerant control law is designed for the supervision of the faulty machine. Both methods, concerning diagnosis and control, are based on homogeneous theory and consequently converge in finite time. This active fault tolerant control highlights the interest of state observer and fault estimation. Simulation results highlighting the relevance of the proposed approach are also presented. Sparse recovery diagnosis, active fault-tolerant control, sliding mode control, twin wind turbine, electrical fault, permanent magnet synchronous machine.