Application of a PI-controller to a 25 MW Floating Wind Turbine

Abstract

Proportional-integral controllers are extensively applied to the pitch control of wind turbines. Despite its simplicity, this control strategy achieves good performance in onshore applications. However, the application of proportional-integral controllers to floating wind turbines faces some challenges, such as negative feedback due to the platform motion. In this sense, the present work proposes a parametric study to assess the influence of tuning parameters of the pitch controller on the performance of a 25 MW floating wind turbine. Effects of including floating feedback in the control strategy are also investigated. Finally, optimum parameters for a proportional-integral pitch controller are defined for the 25 MW wind turbine.