Articles | Volume 10, issue 12
https://doi.org/10.5194/wes-10-3027-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-10-3027-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Frequency-domain modeling of floating wind arrays with shared mooring lines
National Renewable Energy Laboratory, Golden, Colorado, United States
Lucas Carmo
National Renewable Energy Laboratory, Golden, Colorado, United States
Ericka Lozon
National Renewable Energy Laboratory, Golden, Colorado, United States
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This paper presents GW-scale floating wind farm reference designs tailored to the site conditions of three regions. The array designs use a 15 MW semisubmersible floating turbine and include the array layout, mooring systems, dynamic power cables, array cable routing, and floating substations. The layout methodology includes spatial constraints for each subsystem. The resulting reference arrays provide open-source baseline designs to facilitate future floating wind research at the array scale.
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This paper studies the instantaneous centre of rotation (ICR) of floating offshore wind turbines (FOWTs). We present a method for computing the ICR and examine the correlations between the external loading, design features, ICR statistics, motions, and loads. We demonstrate how to apply the new insights to successfully modify the designs of the spar and semisubmersible FOWTs to reduce the loads in the moorings, the tower, and the blades, improving the ultimate strength and fatigue properties.
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As climate change increasingly impacts our daily lives, a transition towards cleaner energy is needed. With all the growth in floating offshore wind and the planned floating wind farms (FWFs) in the next few years, we urgently need new techniques and methodologies to accommodate the differences between the fixed bottom and FWFs. This paper presents a novel methodology to decrease aerodynamic losses inside an FWF by passively relocating the downwind floating wind turbines out of the wakes.
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Preprint under review for WES
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This paper presents GW-scale floating wind farm reference designs tailored to the site conditions of three regions. The array designs use a 15 MW semisubmersible floating turbine and include the array layout, mooring systems, dynamic power cables, array cable routing, and floating substations. The layout methodology includes spatial constraints for each subsystem. The resulting reference arrays provide open-source baseline designs to facilitate future floating wind research at the array scale.
Katarzyna Patryniak, Maurizio Collu, Jason Jonkman, Matthew Hall, Garrett Barter, Daniel Zalkind, and Andrea Coraddu
Wind Energ. Sci., 10, 2051–2077, https://doi.org/10.5194/wes-10-2051-2025, https://doi.org/10.5194/wes-10-2051-2025, 2025
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This paper studies the instantaneous centre of rotation (ICR) of floating offshore wind turbines (FOWTs). We present a method for computing the ICR and examine the correlations between the external loading, design features, ICR statistics, motions, and loads. We demonstrate how to apply the new insights to successfully modify the designs of the spar and semisubmersible FOWTs to reduce the loads in the moorings, the tower, and the blades, improving the ultimate strength and fatigue properties.
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As floating wind turbines progress to arrays with multiple units, it becomes important to understand how the wake of a floating turbine affects the performance of other units in the array. Due to the compliance of the floating substructure, the wake of a floating wind turbine may behave differently from that of a fixed turbine. In this work, we present an investigation of the mutual interaction between the motions of floating wind turbines and wakes.
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As climate change increasingly impacts our daily lives, a transition towards cleaner energy is needed. With all the growth in floating offshore wind and the planned floating wind farms (FWFs) in the next few years, we urgently need new techniques and methodologies to accommodate the differences between the fixed bottom and FWFs. This paper presents a novel methodology to decrease aerodynamic losses inside an FWF by passively relocating the downwind floating wind turbines out of the wakes.
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Short summary
This paper presents a frequency-domain dynamics modeling approach for multiple floating wind turbines that are connected by shared mooring lines. It models the wave excitation and response of each floating platform and computes the shared mooring line reactions based on the relative platform motions. A two-turbine scenario demonstrates the approach, and comparison with an established time-domain model verifies its accuracy. The results reveal a new shared mooring tension-dynamics phenomenon.
This paper presents a frequency-domain dynamics modeling approach for multiple floating wind...
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