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arXiv · 2104.10737

Feedforward-Feedback wake redirection for wind farm control

Steffen Raach·Bart Doekemeijer·Sjoerd Boersma·Jan-Willem van Wingerden·Po Wen Cheng
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Abstract

This work presents a combined feedforward-feedback wake redirection framework for wind farm control. The FLORIS wake model, a control-oriented steady-state wake model is used to calculate optimal yaw angles for a given wind farm layout and atmospheric condition. The optimal yaw angles, which maximize the total power output, are applied to the wind farm. Further, the lidar-based closed-loop wake redirection concept is used to realize a local feedback on turbine level. The wake center is estimated from lidar measurements \unit[3]{D} downwind of the wind turbines. The dynamical feedback controllers support the feedforward controller and reject disturbances and adapt to model uncertainties. Altogether, the total framework is presented and applied to a nine turbine wind farm test case. In a high fidelity simulation study the concept shows promising results and an increase in total energy production compared to the baseline case and the feedforward-only case.

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Steffen Raach, Bart Doekemeijer, Sjoerd Boersma, Jan-Willem van Wingerden, Po Wen Cheng. 2021-04-21. Feedforward-Feedback wake redirection for wind farm control. https://arxiv.org/abs/2104.10737

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