Abstract
This paper addresses joint wind-wave induced dynamic responses of a semi-type offshore floating wind turbine (OFWT) under normal states and fault event conditions. The analysis in this paper is conducted in time domain, using an aero-hydro-servo-elastic simulation code-FAST. Owing to the unique viscous features of the reference system, the original viscous damping model implemented in FAST is replaced with a quadratic one to gain an accurate capture of viscous effects. Simulation cases involve free-decay motion in still water, steady motions in the presence of regular waves and wind as well as dynamic response in operational sea states with and without wind. Simulations also include the cases for transient responses induced by fast blade pitching after emergency shutdown. The features of platform motions, local structural loads and a typical mooring line tension force under a variety of excitations are obtained and investigated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bachynski, E. E., Etemaddar, M., Kvittem, M. I., Luan, C. and Moan, T., 2013. Dynamic analysis of floating wind turbines during pitch actuator fault, grid loss, and shutdown, Energy Procedia, 35, 210–222.
Butterfield, S., Musial, W. and Scott, G., 2009. Definition of a 5-MW Reference Wind Turbine for Offshore System Development, Technical Report NREL/TP-500-38060, National Renewable Energy Laboratory, USA.
Coulling, A. J., Goupee, A. J., Robertson, A. N., Jonkman, J. M. and Dagher, H. J., 2013. Validation of a FAST semi-submersible floating wind turbine numerical model with DeepCwind test data, Journal of Renewable and Sustainable Energy, 5(2): 023116.
Ettefagh, M. M., 2015. Damage identification of a TLP floating wind turbine by meta-heuristic algorithms, China Ocean Eng., 29(6): 891–902.
Global Wind Energy Council(GWEC), 2014. Global Wind Reports Annual Market Update 2013.
Goupee, A. J., Koo, B., Kimball, R. W., Lambrakos, K. F. and Dagher, H. J., 2012. Experimental comparison of three floating wind turbine concepts, Proceedings of ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering, Rio de Janeiro, Brazil, 467–476.
Hansen, M. O., 2013. Aerodynamics of Wind Turbines, Routledge.
Jiang, Z., Karimirad, M. and Moan, T., 2013. Dynamic response analysis of wind turbines under blade pitch system fault, grid loss, and shutdown events, Wind Energy, 17(9): 1385–1409.
Jonkman, J. M., 2007. Dynamics Modeling and Loads Analysis of An Offshore Floating Wind Turbine, Ph. D. Thesis, University of Colorado.
Jonkman, J. M., 2008. Influence of control on the pitch damping of a floating wind turbine, Proceedings of 27th ASME Wind Energy Symposium, Reno, Nevada, USA.
Jonkman, J., Larsen, T. J., Hansen, A. M., Nygaard, T., Maus, K., Karimirad, M. and Shi, W., 2010. Offshore code comparison collaboration within IEA wind task 23: Phase IV results regarding floating wind turbine modeling, Proc. 2010 European Wind Energy Conference and Exhibition, Warsaw, Poland.
Karimirad, M. and Moan, T., 2011. Ameliorating the negative damping in the dynamic responses of a tension leg spar-type support structure with a downwind turbine, Proc. 2011 European Wind Energy Conference, Brussels, Belgium.
Karimirad, M., 2011. Stochastic Dynamic Response Analysis of Spar-Type Wind Turbines with Catenary or Taut Mooring Systems, Ph. D. Thesis, Norwegian University of Science and Technology.
Koo, B., Goupee, A. J., Lambrakos, K. and Kimball, R. W., 2012. Model tests for a floating windturbine on three different floaters, Journal of Offshore Mechanics and Arctic Engineering, 136(2): 020907.
Kvittem, M. I., Bachynski, E. E. and Moan, T., 2012. Effects of hydrodynamic modelling in fully coupled simulations of a semi-submersible wind turbine, Energy Procedia, 24, 351–362.
Larsen, T. J. and Hanson, T. D., 2007. A method to avoid negative damped low frequent tower vibrations for a floating, pitch controlled wind turbine, Journal of Physics: Conference Series, 75(1): 012073.
Martin, H. R., 2011. Development of A Scale Model Wind Turbine for Testing of Offshore Floating Wind Turbine Systems, Ph. D. Thesis, Maine Maritime Academy.
Martin, H. R., Kimball, R. W., Viselli, A. M. and Goupee, A. J., 2012. Methodology for wind/wave basin testing of floating offshore wind turbines, Proceedings of ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering, Rio de Janeiro, Brazil, 445–454.
Nielsen, F. G., Hanson, T. D. and Skaare, B., 2006. Integrated dynamic analysis of floating offshore wind turbines, Proceedings of ASME 2006 25th International Conference on Ocean, Offshore and Arctic Engineering, Germany, 671–679.
Roddier, D., Cermelli, C., Aubault, A. and Weinstein, A., 2010. WindFloat: A floating foundation for offshore wind turbines, Journal of Renewable and Sustainable Energy, 2, 033104.
Skaare, B., Hanson, T. D., Nielsen, F. G., Yttervik, R., Hansen, A. M., Thomsen, K. and Larsen, T. J., 2007. Integrated dynamic analysis of floating offshore wind turbines, Proc. 2007 European Wind Energy Conference and Exhibition, Milan, Italy.
Tang, Y. G., Song, K. and Wang, B., 2015. Experiment study of dynamics response for wind turbine system of floating foundation, China Ocean Eng., 29(6): 835–846.
Zhang, R., Tang, Y., Hu, J., Ruan, S. and Chen, C., 2013. Dynamic response in frequency and time domains of a floating foundation for offshore wind turbines, Ocean Eng., 60, 115–123.
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was financially supported by the National Natural Science Foundation of China (Grant No. 51239007).
Rights and permissions
About this article
Cite this article
Hu, Zq., Li, L., Wang, J. et al. Dynamic responses of a semi-type offshore floating wind turbine during normal state and emergency shutdown. China Ocean Eng 30, 97–112 (2016). https://doi.org/10.1007/s13344-016-0005-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13344-016-0005-y