A disturbance decoupling nonlinear control law for variable speed wind turbines

Individual pitch control of wind turbines using local inflow measurements

“…• Simplified model of aerodynamics and wind field • Prediction of future loads based on local inflow measurements Simplified models of both the aerodynamics and the wind field are usually used when designing collective pitch controllers for wind turbines (See eg. Xin (1997), Thomsen and Poulsen (2007)). These models do not carry enough spatial information such that individual pitch controllers can be designed.…”

“…In most documented research the pitch of the blades are controlled collectively applying a wide variety of methods. This ranges from linear methods such as LQ, LQG, and H ∞ (Bossanyi (2003b), Xin (1997), Grimble (1996)) to adaptive techniques (Johnson et al (2006)) and nonlinear methods such as feedback linearization (Leith and Leithead (1997), Thomsen and Poulsen (2007)).…”

Disturbance decoupling using a novel approach to integral sliding-mode

“…Similar decoupling approaches have been investigated in [12] and [13]. Both use an input-output linearisation of the system with uncertainties acting only on the internal dynamics.…”

Robust control of the variable speed wind turbines in the presence of uncertainties: A comparison between H∞ and PID controllers

“…Among the other advanced control techniques used for the variable speed control of WTs (wind turbines); adaptive algorithm [11], nonlinear control for power regulation [30], decoupling nonlinear control law for disturbance rejection [31], adaptive control of DFIG based WT [32], and a comparison between linear and nonlinear control methods [17,33] have been carried out. Also, model predictive control of WT in small power systems [34], power curve control in micro wind turbine design [35] and combined predictive control with LMI (linear matrix inequalities) based on TeS fuzzy model of WT [36] have been presented.…”