Dynamic Modelling and Modal Analysis of an Offshore Wind Turbine
DOI:
https://doi.org/10.18311/jmmf/2023/33353Keywords:
Floating offshore wind turbine, Modal analysis, Natural frequency, Mode shapes, AshesAbstract
Floating wind turbine is one of the promising technology due to its consistent and powerful wind sources in deep-sea zone resulting in high power generation. In the present study a 5 MW baseline spar-type offshore wind turbine is considered for modelling and modal analysis. Sub-systems viz., rotor, nacelle, supporting tower, platform and mooring lines are developed using Ashes software. Commercial software which is specially dedicated for the analysis on onshore and offshore wind turbine. Structural steel is considered for the material properties of the sub-systems. Considering the wind speed and wave effects on the live conditions, modal analysis is carried out. The natural frequencies up to six modes and respective mode shapes are established and reported.
Downloads
Metrics
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
References
Al-Solihat, M. K. and Nahon, M. (2018): Flexible multibody dynamic modeling of a floating wind turbine. International Journal of Mechanical Sciences, 142, 518-529.
Shi, P., McPhee, J. and Heppler, G. R. (2001): A deformation field for Euler–Bernoulli beams with applications to flexible multibody dynamics. Multibody System Dynamics, 5(1), 79-104.
Meirovitch, L. and Tuzcu, I. (2003): Integrated approach to the dynamics and control of maneuvering flexible aircraft.
Junkins, J. L. (1993): Introduction to dynamics and control of flexible structures. Aiaa.
Baruh, H. (2015). Applied dynamics (pp. 5-6 Boca Raton: CRC press.
Sarpkaya, T., Isaacson, M. and Wehausen, J. V. (1982): Mechanics of wave forces on offshore structures.
Jonkman, J., Butterfield, S., Musial, W., and Scott, G. (2009): Definition of a 5-MW reference wind turbine for offshore system development (No. NREL/TP-500-38060). National Renewable Energy Lab.(NREL), Golden, CO (United States).
Matsukuma, H., and Utsunomiya, T. (2008): Motion analysis of a floating offshore wind turbine considering rotor-rotation. The IES Journal Part A: Civil & Structural Engineering, 1(4), 268-279.