Feedforward-Feedback wake redirection for wind farm control
- 1Universität Stuttgart, Stuttgart Wind Energy (SWE), Allmandring 5B, 70569 Stuttgart, Germany
- 2TU Delft, Mekelweg 5, 2628 CD Delft, The Netherlands
- 3sowento GmbH, Donizettistr. 1A, 70195 Stuttgart, Germany
- 1Universität Stuttgart, Stuttgart Wind Energy (SWE), Allmandring 5B, 70569 Stuttgart, Germany
- 2TU Delft, Mekelweg 5, 2628 CD Delft, The Netherlands
- 3sowento GmbH, Donizettistr. 1A, 70195 Stuttgart, Germany
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 3D 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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Preprint
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Steffen Raach et al.
Interactive discussion


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RC1: 'Interesting topic but needs some work', Katherine Dykes, 26 Dec 2019
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RC2: 'Referee Comments', Anonymous Referee #2, 26 Jan 2020
Interactive discussion


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RC1: 'Interesting topic but needs some work', Katherine Dykes, 26 Dec 2019
-
RC2: 'Referee Comments', Anonymous Referee #2, 26 Jan 2020
Steffen Raach et al.
Steffen Raach et al.
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