This paper introduces the design data and numerical analysis of a braceless steel semi-submersible wind turbine. The hull of the semi-submersible wind turbine is designed to support a reference 5-MW horizontal axis wind turbine at a site in the northern North Sea. The hull is composed of a central column, three side columns and three pontoons. The side columns and pontoons are arranged radially outward from the central column which is used to support the wind turbine. The side columns form the corners of a triangle on the horizontal plane and are connected by the pontoons to the central column at the bottom to form an integrated structure. Numerical analysis has been carried out to analyze the intact stability, natural periods and modes and global dynamic responses in winds and waves. Results of the numerical analysis show that the design has very good intact stability, well designed natural periods and modes, moderate rigid-body motions in extreme environmental conditions and a reasonable structural design. This paper emphasizes the structural responses of the hull considering both the global and local load effects. The global forces and moments in the hull are calculated by carrying out time-domain global analysis and used as inputs for simplified ultimate limit state design checks for structural strength of the hull. The design can be used as a reference semi-submersible wind turbine.
Skip Nav Destination
ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2016
Busan, South Korea
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4997-2
PROCEEDINGS PAPER
Design and Analysis of a Braceless Steel 5-MW Semi-Submersible Wind Turbine
Torgeir Moan
Torgeir Moan
NTNU, Trondheim, Norway
Search for other works by this author on:
Chenyu Luan
NTNU, Trondheim, Norway
Zhen Gao
NTNU, Trondheim, Norway
Torgeir Moan
NTNU, Trondheim, Norway
Paper No:
OMAE2016-54848, V006T09A052; 12 pages
Published Online:
October 18, 2016
Citation
Luan, C, Gao, Z, & Moan, T. "Design and Analysis of a Braceless Steel 5-MW Semi-Submersible Wind Turbine." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Ocean Space Utilization; Ocean Renewable Energy. Busan, South Korea. June 19–24, 2016. V006T09A052. ASME. https://doi.org/10.1115/OMAE2016-54848
Download citation file:
352
Views
Related Proceedings Papers
Related Articles
Profiles of Two JOMAE Associate Editors (A Continuing Series)
J. Offshore Mech. Arct. Eng (October,2021)
Motion and Structural Response of a Hydroelastic Semi-Submersible Model to Waves and Ice Impacts
J. Offshore Mech. Arct. Eng (February,1987)
Robust Design of Horizontal Axis Wind Turbines Using Taguchi Method
J. Mech. Des (November,2011)
Related Chapters
Implications of the Loads Jip on Extreme Wave Conditions in the North Sea
Ageing and Life Extension of Offshore Facilities
A Probabilistic Structural Reliability Assessment of Existing North Sea Platforms
Ageing and Life Extension of Offshore Facilities
Numerical Analysis for the Prediction of Hull Pressure Fluctuation and Underwater Radiated Noise Induced by Marine Propeller Cavitation
Proceedings of the 10th International Symposium on Cavitation (CAV2018)