Results 41 to 50 of about 5,130 (264)

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

, 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 ...
Fleming, P., White, J., Mikkelsen, Torben Krogh, Johnson, K., Churchfield, M., Scholbrock, A., Naughton, B., Clifton, A., Annoni, J., Sjöholm, Mikael, Angelou, Nikolas, Berg, J., Wright, A., Schreck, S., Gebraad, P., Herges, T.   +15 more
core   +1 more source

Physical Modelling of Tidal Stream Turbine Wake Structures under Yaw Conditions

Energies, 2023
Tidal stream turbines may operate under yawed conditions due to variability in ocean current directions. Insight into the wake structure of yawed turbines can be essential to ensure efficient tidal stream energy extraction, especially for turbine arrays ...
Can Zhang, Jisheng Zhang, Athanasios Angeloudis, Yudi Zhou, Stephan C. Kramer, Matthew D. Piggott   +5 more
doaj   +1 more source

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   +1 more source

Enhancing Wind Farm Performance through Axial Induction and Tilt Control: Insights from Wind Tunnel Experiments

Energies, 2023
Static axial induction control and tilt control are two strategies that have the potential to increase power production in wind farms, mitigating wake effects and increasing the available power for downstream turbines.
Guillem Armengol Barcos, Fernando Porté-Agel   +1 more
doaj   +1 more source

Sensitivity and Uncertainty of the FLORIS Model Applied on the Lillgrund Wind Farm

Energies, 2021
Wind farms experience significant efficiency losses due to the aerodynamic interaction between turbines. A possible control technique to minimize these losses is yaw-based wake steering.
Maarten T. van Beek, Axelle Viré, Søren J. Andersen   +2 more
doaj   +1 more source

Development and validation of a hybrid data-driven model-based wake steering controller and its application at a utility-scale wind plant [PDF]

Wind Energy Science
Despite the promise of wind farm control through wake steering to reduce wake losses, the deployment of the technology to wind plants has historically been limited to small and simple demonstrations.
P. Bachant, P. Ireland, B. Burrows, C. Qiao, J. Duncan, D. Zheng, M. Dua   +6 more
doaj   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

Derivation and characterization of retinal pigment epithelium from urine‐derived iPSCs

FEBS Open Bio, EarlyView.
Age‐related macular degeneration causes vision loss via RPE dysfunction and loss. Traditional iPSC therapies rely on invasive biopsies, limiting scalability. Here, we utilize urine‐derived stem cells as an accessible source to generate u‐iPSCs, successfully differentiated into pigmented RPE. This “Urine‐to‐Retina” platform provides a promising path for
Daniella Beiner, Hainan Zhu, Carol Christine Bosholm, Heuy‐Ching Wang, Tracy Criswell, Anthony Atala, Jian‐Xing Ma, Yuanyuan Zhang   +7 more
wiley   +1 more source

Impact of wind farm wake steering control on blade root load [PDF]

, 2023
Yaw misalignment is known to affect blade root loads on wind turbines. Most of previous studies concentrate on yaw misalignment in the context of wake steering control, aiming at increasing the total output power of the wind farm. There, wake steering is
Wang, Kaibo, He, Shukai, Wang, Hangyu, Liu, Yongqian, Yan, Jie, Chabaud, Valentin Bruno   +5 more
core  

Wind farm yield and lifetime optimization by smart steering of wakes

, 2022
Art. 012020, 11 S.Wake steering has an impact on both the wind farm energy yield and turbine loads. We evaluate these effects based on yaw-corrected power and thrust curves and tabulated turbine load simulation results.
Vollmer, L., Requate, N., Schmidt, J.
core   +1 more source