Direct Periodic Adaptive Control of the aerodynamic loads of a rotating wind turbine blade using microtabs

A rotating wind turbine blade with periodic aerodynamic loads is modeled as an aeroelastic model based on the Beddoes-Leishman dynamic stall model. Direct Periodic Adaptive Control scheme is introduced for the control of blade vibration studies based on this proposed model. The robustness and effectiveness of the Adaptive Control is shown by closed-loop simulation tests, using microtab devices. The stability of the controller is proved theoretically by a Direct Adaptive Stability Theorem, and also revealed numerically by illustration of the related Kalman-Yacubovic conditions.