Research on Dynamic Response Characteristics of 6MW Spar-Type Floating Offshore Wind Turbine
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A 6MW spar-type floating offshore wind turbine (FOWT) model is put forward and a fully coupled aero-hydro-servo-elastic time domain model is established in the fatigue, aerodynamics, structures and turbulence (FAST) code. Influence rules of wind load and wave load on the characteristics of 6MW spar-type FOWT are investigated. Firstly, validation of the model is carried out and a satisfactory result is obtained. The maximal deviations of rotor thrust and power between simulation results and reference values are 4.54% and −2.74%, respectively. Then the characteristics, including rotor thrust, rotor power, out-of-plane blade deflection, tower base fore-aft bending moment, and mooring line tension, are researched. The results illustrate that the mean value of dynamic response characteristics is mainly controlled by the wind-induced action. For characteristics of tower base fore-aft bending moment and platform pitch motion, the oscillation is dominated by the wave-induced action during all conditions considered. For characteristics of out-of-plane blade tip deflection and mooring line tension, the oscillation is commanded by combination effect of wave and wind loads when the wind speed is lower than the rated wind speed (hereinafter referred to as below rated wind speed) and is controlled by the wave-induced action when the wind speed is higher than the rated wind speed (hereinafter referred to as above rated wind speed). As to the rotor thrust and power, the oscillation is dominated by the wind induced action at below rated wind speed and by the combination action of wind and wave loads at above rated wind speed. The results should be useful to the detailed design and model basin test of the 6MW spar-type FOWT.
Key wordsfloating offshore wind turbine (FOWT) time domain response wind and wave loads dynamic response characteristics
CLC numberU 661
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- BTM Consult APS. International wind energy development world market update 2009, forecast 2010–2014 [R]. Copenhagen, Denmark: BTM Consult APS, 2010.Google Scholar
- JONKMAN J M, BUHL JR M L. FAST user’s guide [R]. Colorado, USA: National Renewable Energy Laboratory, 2005.Google Scholar
- CHEN X H, YU Q. Design requirements for floating offshore wind turbines [C]//Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Nantes, France: ASME, 2013: 1–8.Google Scholar
- ZHAO Y S, YANG J M, HE Y P, et al. Experimental study of a new multi-column tension leg-type floating wind turbine concept [J]. SCIENTIA SINICA Physica, Mechanica & Astronomica, 2016, 46(12): 124712 (in Chinese).Google Scholar
- BOSSANYI E A. Bladed for windows user manual [M]. London, UK: Garrad Hassan and Partners Limited, 2003.Google Scholar
- HANSEN M O L. Aerodynamics of wind turbines [M]. London, UK: Earthscan, 2008.Google Scholar