Lidar-based wake tracking for closed-loop wind farm control

The Science of Making Torque from Wind

Raach, Steffen^1 ; Schlipf, David^1 ; Cheng, Po Wen^1

Stuttgart Wind Energy (SWE), University of Stuttgart, Allmandring 5B, Stuttgart

70569, Germany^1

关键词: Closed loops;    Desired position;    LIDAR data;    Lidar measurements;    Lidar systems;    Model-based estimation;    Reduced order;    Wake model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/5/052009/pdf
DOI  :  10.1088/1742-6596/753/5/052009

来源: IOP

【 摘 要 】

This work presents two advancements towards closed-loop wake redirecting of a wind turbine. First, a model-based estimation approach is presented which uses a nacelle-based lidar system facing downwind to obtain information about the wake. A reduced order wake model is described which is then used in the estimation to track the wake. The tracking is demonstrated with lidar measurement data from an offshore campaign and with simulated lidar data from a SOWFA simulation. Second, a controller for closed-loop wake steering is presented. It uses the wake tracking information to set the yaw actuator of the wind turbine to redirect the wake to a desired position. Altogether, this paper aims to present the concept of closed-loop wake redirecting and gives a possible solution to it.