Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different Loadings
This study investigates the dynamic behavior of a jacket-supported offshore wind turbine (JOWT) by developing its substructure and controller tailored for the IEA 15 MW reference wind turbine. A fully coupled numerical model integrating the turbine, jacket, and pile is established to analyze the nat...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-03-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/18/7/1738 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850212632721620992 |
|---|---|
| author | Renqiang Xi Lijie Yu Xiaowei Meng Wanli Yu |
| author_facet | Renqiang Xi Lijie Yu Xiaowei Meng Wanli Yu |
| author_sort | Renqiang Xi |
| collection | DOAJ |
| description | This study investigates the dynamic behavior of a jacket-supported offshore wind turbine (JOWT) by developing its substructure and controller tailored for the IEA 15 MW reference wind turbine. A fully coupled numerical model integrating the turbine, jacket, and pile is established to analyze the natural frequencies and dynamic responses of the system under wind–wave–current loading and seismic excitations. Validation studies confirm that the proposed 15 MW JOWT configuration complies with international standards regarding natural frequency constraints, bearing capacity requirements, and serviceability limit state criteria. Notably, the fixed-base assumption leads to overestimations of natural frequencies by 32.4% and 13.9% in the fore-aft third- and fourth-order modes, respectively, highlighting the necessity of soil–structure interaction (SSI) modeling. During both operational and extreme wind–wave conditions, structural responses are governed by first-mode vibrations, with the pile-head axial forces constituting the primary resistance against jacket overturning moments. In contrast, seismic excitations conversely trigger significantly higher-mode activation in the support structure, where SSI effects substantially influence response magnitudes. Comparative analysis demonstrates that neglecting SSI underestimates peak seismic responses under the BCR (Bonds Corner Record of 1979 Imperial Valley Earthquake) ground motion by 29% (nacelle acceleration), 21% (yaw-bearing bending moment), 42% (yaw-bearing shear force), and 17% (tower-base bending moment). |
| format | Article |
| id | doaj-art-6b83d1ae32ef4dd0af6474b69896043f |
| institution | OA Journals |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-6b83d1ae32ef4dd0af6474b69896043f2025-08-20T02:09:18ZengMDPI AGEnergies1996-10732025-03-01187173810.3390/en18071738Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different LoadingsRenqiang Xi0Lijie Yu1Xiaowei Meng2Wanli Yu3School of Mechanical Engineering, Changzhou University, Changzhou 213164, ChinaSchool of Mechanical Engineering, Changzhou University, Changzhou 213164, ChinaXinjiang Goldwind Science Technology Co., Ltd., Beijing 100176, ChinaNational Key Laboratory of Bridge Safety and Resilience, Beijing University of Technology, Beijing 100124, ChinaThis study investigates the dynamic behavior of a jacket-supported offshore wind turbine (JOWT) by developing its substructure and controller tailored for the IEA 15 MW reference wind turbine. A fully coupled numerical model integrating the turbine, jacket, and pile is established to analyze the natural frequencies and dynamic responses of the system under wind–wave–current loading and seismic excitations. Validation studies confirm that the proposed 15 MW JOWT configuration complies with international standards regarding natural frequency constraints, bearing capacity requirements, and serviceability limit state criteria. Notably, the fixed-base assumption leads to overestimations of natural frequencies by 32.4% and 13.9% in the fore-aft third- and fourth-order modes, respectively, highlighting the necessity of soil–structure interaction (SSI) modeling. During both operational and extreme wind–wave conditions, structural responses are governed by first-mode vibrations, with the pile-head axial forces constituting the primary resistance against jacket overturning moments. In contrast, seismic excitations conversely trigger significantly higher-mode activation in the support structure, where SSI effects substantially influence response magnitudes. Comparative analysis demonstrates that neglecting SSI underestimates peak seismic responses under the BCR (Bonds Corner Record of 1979 Imperial Valley Earthquake) ground motion by 29% (nacelle acceleration), 21% (yaw-bearing bending moment), 42% (yaw-bearing shear force), and 17% (tower-base bending moment).https://www.mdpi.com/1996-1073/18/7/1738jacket-supported offshore wind turbinenatural frequencydynamic response analysissoil–structure interactionspectral characteristics |
| spellingShingle | Renqiang Xi Lijie Yu Xiaowei Meng Wanli Yu Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different Loadings Energies jacket-supported offshore wind turbine natural frequency dynamic response analysis soil–structure interaction spectral characteristics |
| title | Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different Loadings |
| title_full | Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different Loadings |
| title_fullStr | Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different Loadings |
| title_full_unstemmed | Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different Loadings |
| title_short | Dynamic Response of a 15 MW Jacket-Supported Offshore Wind Turbine Excited by Different Loadings |
| title_sort | dynamic response of a 15 mw jacket supported offshore wind turbine excited by different loadings |
| topic | jacket-supported offshore wind turbine natural frequency dynamic response analysis soil–structure interaction spectral characteristics |
| url | https://www.mdpi.com/1996-1073/18/7/1738 |
| work_keys_str_mv | AT renqiangxi dynamicresponseofa15mwjacketsupportedoffshorewindturbineexcitedbydifferentloadings AT lijieyu dynamicresponseofa15mwjacketsupportedoffshorewindturbineexcitedbydifferentloadings AT xiaoweimeng dynamicresponseofa15mwjacketsupportedoffshorewindturbineexcitedbydifferentloadings AT wanliyu dynamicresponseofa15mwjacketsupportedoffshorewindturbineexcitedbydifferentloadings |