Results 11 to 20 of about 88,387 (286)

Lidar-based wake tracking for closed-loop wind farm control [PDF]

Wind Energy Science, 2017
This work presents two advancements towards closed-loop wake redirection of a wind turbine. First, a model-based wake-tracking approach is presented, which uses a nacelle-based lidar system facing downwind to obtain information about the wake.
S. Raach, D. Schlipf, P. W. Cheng
doaj   +5 more sources

Lidar measurements of yawed-wind-turbine wakes: characterization and validation of analytical models [PDF]

Wind Energy Science, 2020
Wake measurements of a scanning Doppler lidar mounted on the nacelle of a full-scale wind turbine during a wake-steering experiment were used for the characterization of the wake flow, the evaluation of the wake-steering set-up, and the validation of ...
P. Brugger, M. Debnath, A. Scholbrock, P. Fleming, P. Moriarty, E. Simley, D. Jager, J. Roadman, M. Murphy, H. Zong, F. Porté-Agel   +10 more
doaj   +3 more sources

A numerical study of tilt‐based wake steering using a hybrid free‐wake method

Wind Energy, 2020
This study investigates the potential of using tilt‐based wake steering to alleviate wake shielding problems experienced by downwind turbines. Numerical simulations of turbine wakes have been conducted using a hybrid free‐wake analysis combining vortex ...
Keye Su, Donald Bliss
doaj   +2 more sources

Addressing deep array effects and impacts to wake steering with the cumulative-curl wake model [PDF]

Wind Energy Science, 2023
Wind farm design and analysis heavily rely on computationally efficient engineering models that are evaluated many times to find an optimal solution. A recent article compared the state-of-the-art Gauss-curl hybrid (GCH) model to historical data of three
C. J. Bay, P. Fleming, B. Doekemeijer, J. King, M. Churchfield, R. Mudafort   +5 more
doaj   +4 more sources

Wind Farm Power Maximisation via Wake Steering: A Gaussian Process‐Based Yaw‐Dependent Parameter Tuning Approach

Wind Energy
Maximising the power production of wind farms is vital to meet the growing demand for wind energy and reduce its cost. Wake effects, resulting from the aerodynamic interactions between turbines in a wind farm, significantly impact farm efficiency ...
Sylvain Laizet, Andrew Wynn
exaly   +2 more sources

On the importance of wind predictions in wake steering optimization [PDF]

Wind Energy Science
Wake steering is a technique that optimizes the energy production of a wind farm by employing yaw control to misalign upstream turbines with the incoming wind direction.
E. Kadoche, E. Kadoche, P. Bianchi, F. Carton, P. Ciblat, D. Ernst, D. Ernst   +6 more
doaj   +4 more sources

Detailed field test of yaw-based wake steering [PDF]

Journal of Physics: Conference Series, 2016
This paper describes a detailed field-test campaign to investigate yaw-based wake steering. In yaw-based wake steering, an upstream turbine intentionally misaligns its yaw with respect to the inflow to deflect its wake away from a downstream turbine, with the goal of increasing total power production.
Angelou, Nikolas, Annoni, J., Berg, J., Churchfield, M., Clifton, A., Fleming, P., Gebraad, P., Herges, T., Johnson, K., Mikkelsen, Torben Krogh, Naughton, B., Scholbrock, A., Schreck, S., Sjöholm, Mikael, White, J., Wright, A.   +15 more
core   +2 more sources

Field experiment for open-loop yaw-based wake steering at a commercial onshore wind farm in Italy [PDF]

Wind Energy Science, 2021
The concept of wake steering on wind farms for power maximization has gained significant popularity over the last decade. Recent field trials described in the literature not only demonstrate the real potential of wake steering on commercial wind farms ...
B. M. Doekemeijer, S. Kern, S. Maturu, S. Maturu, S. Kanev, B. Salbert, J. Schreiber, F. Campagnolo, C. L. Bottasso, S. Schuler, F. Wilts, T. Neumann, G. Potenza, F. Calabretta, F. Fioretti, J.-W. van Wingerden   +15 more
doaj   +1 more source

Increased power gains from wake steering control using preview wind direction information [PDF]

Wind Energy Science, 2023
Yaw controllers typically rely on measurements taken at the wind turbine, resulting in a slow reaction to wind direction changes and subsequent power losses due to misalignments.
B. A. M. Sengers, B. A. M. Sengers, A. Rott, E. Simley, M. Sinner, G. Steinfeld, M. Kühn   +6 more
doaj   +1 more source

Optimal closed-loop wake steering – Part 2: Diurnal cycle atmospheric boundary layer conditions [PDF]

Wind Energy Science, 2022
The magnitude of wake interactions between individual wind turbines depends on the atmospheric stability. We investigate strategies for wake loss mitigation through the use of closed-loop wake steering using large eddy simulations of the diurnal cycle ...
M. F. Howland, A. S. Ghate, A. S. Ghate, J. B. Quesada, J. J. Pena Martínez, W. Zhong, F. P. Larrañaga, S. K. Lele, J. O. Dabiri, J. O. Dabiri   +9 more
doaj   +1 more source