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A novel model predictive (MPC) approach for individual pitch control of wind turbines is proposed in this paper. A repetitive wind disturbance model is incorporated into the MPC prediction. As a consequence, individual pitch feed-forward control action is generated by the controller, taking “future” wind disturbance into account. Information about the estimated wind spatial distribution one blade experience can be used in the prediction model to better control the next passing blade. A simulation comparison between the proposed controller and an industry-standard PID controller shows better mitigation of drive-train, blade and tower loads.
Date of Conference: 12-15 Dec. 2011