Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines
Offshore wind turbines take advantage of the vast energy resource in open waters but face structural integrity challenges specific to their operating environment that require cost-effective load alleviation solutions. This paper introduces a computational methodology for model-based two- and three-d...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/155384 |
| _version_ | 1811694314872373248 |
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| author | Ng, Bing Feng Palacios, Rafael Graham, J. Michael R. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Ng, Bing Feng Palacios, Rafael Graham, J. Michael R. |
| author_sort | Ng, Bing Feng |
| collection | NTU |
| description | Offshore wind turbines take advantage of the vast energy resource in open waters but face structural integrity challenges specific to their operating environment that require cost-effective load alleviation solutions. This paper introduces a computational methodology for model-based two- and three-dimensional design of load alleviation systems on offshore wind turbines. The aero-hydro-servoelastic model is formulated in a convenient state-space representation, coupling a multi-body composite beam description of the main structural elements with unsteady vortex-lattice aerodynamics and Morison's description of the hydrodynamics. The aerodynamics does not require empirical corrections and focuses on a control-oriented approach to the modelling. Numerical results show that through trailing-edge flaps actuated by a robust controller, more than 60% reduction in dynamic loading due to atmospheric turbulence can be achieved for the sectional model and close to 13% reduction in blade loads is obtained for the complete three-dimensional floating turbine. |
| first_indexed | 2024-10-01T07:05:37Z |
| format | Journal Article |
| id | ntu-10356/155384 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:05:37Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1553842022-02-18T07:22:35Z Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines Ng, Bing Feng Palacios, Rafael Graham, J. Michael R. School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Aeroelasticity Load Control Offshore wind turbines take advantage of the vast energy resource in open waters but face structural integrity challenges specific to their operating environment that require cost-effective load alleviation solutions. This paper introduces a computational methodology for model-based two- and three-dimensional design of load alleviation systems on offshore wind turbines. The aero-hydro-servoelastic model is formulated in a convenient state-space representation, coupling a multi-body composite beam description of the main structural elements with unsteady vortex-lattice aerodynamics and Morison's description of the hydrodynamics. The aerodynamics does not require empirical corrections and focuses on a control-oriented approach to the modelling. Numerical results show that through trailing-edge flaps actuated by a robust controller, more than 60% reduction in dynamic loading due to atmospheric turbulence can be achieved for the sectional model and close to 13% reduction in blade loads is obtained for the complete three-dimensional floating turbine. National Research Foundation (NRF) Accepted version Singapore National Research Foundation, Energy Innovation Programme Office 2022-02-18T07:22:35Z 2022-02-18T07:22:35Z 2017 Journal Article Ng, B. F., Palacios, R. & Graham, J. M. R. (2017). Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines. International Journal of Control, 90(1), 15-36. https://dx.doi.org/10.1080/00207179.2015.1068456 0020-7179 https://hdl.handle.net/10356/155384 10.1080/00207179.2015.1068456 2-s2.0-84938675295 1 90 15 36 en International Journal of Control This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Control on 31 Jul 2015, available online: http://www.tandfonline.com/10.1080/00207179.2015.1068456. application/pdf |
| spellingShingle | Engineering::Mechanical engineering Aeroelasticity Load Control Ng, Bing Feng Palacios, Rafael Graham, J. Michael R. Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines |
| title | Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines |
| title_full | Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines |
| title_fullStr | Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines |
| title_full_unstemmed | Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines |
| title_short | Model-based aeroelastic analysis and blade load alleviation of offshore wind turbines |
| title_sort | model based aeroelastic analysis and blade load alleviation of offshore wind turbines |
| topic | Engineering::Mechanical engineering Aeroelasticity Load Control |
| url | https://hdl.handle.net/10356/155384 |
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