Academic Journal
Design of a novel tower damping system for semi-submersible floating offshore wind turbines considering fatigue and ultimate limit states
| العنوان: | Design of a novel tower damping system for semi-submersible floating offshore wind turbines considering fatigue and ultimate limit states |
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| المؤلفون: | Tian, Haonan, N. Soltani, Mohsen, Yeter, Baran, Pozos, Diego Eduardo Galván |
| المصدر: | Tian , H , N. Soltani , M , Yeter , B & Pozos , D E G 2025 , Design of a novel tower damping system for semi-submersible floating offshore wind turbines considering fatigue and ultimate limit states . in Ocean Engineering . vol. 320 , Elsevier , pp. 1 . https://doi.org/10.1016/j.oceaneng.2025.120343 |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2025 |
| المجموعة: | Aalborg University (AAU): Publications / Aalborg Universitet: Publikationer |
| مصطلحات موضوعية: | Fatigue load, Floating offshore wind turbine, Semi-submersible, Tower damping system, Ultimate load |
| الوصف: | This study proposes a novel tower damping system to enhance the structural performance of the NREL 5 MW semi-submersible wind turbine under operational and extreme load conditions. Environmental load data from the Norwegian MET center was analyzed to characterize the loading conditions for floating offshore wind turbines (FOWT). The probability density spectrum of sea state data was employed to identify operational load conditions. At the same time, the Inverse First-Order Reliability Method (IFORM) was utilized to derive the 50-year extreme sea state. Perform a fully coupled Aero-Hydro-Servo-Elastic simulation of the FOWT dynamic model with a damping system using OrcaFlex software. The results reveal that: Under operational sea states, the turbine tower-top displacement was reduced by 60–70%, and acceleration by 30–40%, enhancing tower-top stability. Under extreme loads, tower-top acceleration was reduced by 5–7%, and displacement by 6–8%. Cumulative damage assessments indicate a reduction in fatigue damage of up to 72%, with the effective fatigue life of the tower base extended by 136%. The proposed damping system significantly reduces vibration under fatigue and extreme load conditions. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1016/j.oceaneng.2025.120343 |
| الاتاحة: | https://vbn.aau.dk/da/publications/6f962c72-1a00-41d7-a7ed-9ae511ae28ef https://doi.org/10.1016/j.oceaneng.2025.120343 https://www.sciencedirect.com/science/article/pii/S0029801825000587 http://www.scopus.com/inward/record.url?scp=85214576508&partnerID=8YFLogxK |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.5F182331 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.oceaneng.2025.120343 |
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