“…The design of a fault tolerant controller based on an adaptive Luenberger observer with the aim to enhance the robustness of the wind conversion system with PMSG has been investigated in [11]. In [12] a hybrid scheme employing direct torque control based on fuzzy controller supervisor is discussed. Moreover in [13] a new selective harmonic elimination technique is developed for a PMSG with a multilevel inverter to reduce the total harmonic distortion of the output voltage.…”