Passive control of floating offshore wind turbine nacelle and spar vibrations by multiple tuned mass dampers
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Cites methods from "Passive control of floating offshor..."
...The use of MTMD was also investigated for mitigation of edgewise vibration of tower/nacelle and spar of spartype floating wind turbine [78]....
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82 citations
Cites result from "Passive control of floating offshor..."
...[34] might be more practical since the mass of each TMD is much smaller compared to the STMD....
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71 citations
References
4,194 citations
"Passive control of floating offshor..." refers methods in this paper
...The aerodynamic, blade, hub, and nacelle properties of the NREL 5-MW baseline HAWT [39] are used with R=61.5m, the cut-in and rated rotor speeds as 6.9 and 12.1 rpm, respectively....
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...The aerodynamic, blade, hub, and nacelle properties of the NREL 5-MW baseline HAWT [39] are used with R=61....
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1,976 citations
"Passive control of floating offshor..." refers background in this paper
...The surface elevation η can be expressed as [27]...
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...As the spar center of buoyancy B is always above its center of gravity G, the downward distance from MWL to the center of buoyancy is hB 1⁄4 hG BG: (33) The magnitude of the buoyancy force acting on the spar is Fbuoy 1⁄4 ρwgVs: (34) The vertical restoring coefficient is [27] K V 1⁄4 ρwgAs0: (35) After evaluating the meta-centric height, the roll restoring coefficient is obtained as...
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...0 for circular cylinder [27], and D(zi) is the spar diameter at the discrete depth zi....
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...The simulation formulas for fluid velocity and acceleration in infinite water depth [27] can be extended to the more general case of finite water depth....
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...The wave energy drops off more slowly for larger frequencies than for small frequencies [27]....
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1,210 citations
"Passive control of floating offshor..." refers background in this paper
...The parameters ωj and kj are related by the exact linear dispersion relationship kj tanh kjH 1⁄4 ω(2)j =g for any water depth H [34]....
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1,179 citations
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1,171 citations
"Passive control of floating offshor..." refers methods in this paper
...Recently, a new simulation tool was developed with the capability to model passive, semi-active, and active structural control systems in wind turbines including FOWTs [13] where two independent, single DOF TMDs were incorporated into a modified version of the aero-elastic code FAST [14]....
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...The TMDs are located in the nacelle, their equations of motion are incorporated into the source code of FAST and the stiffness, damping, and commanded force of each TMD are controllable through the FAST-Simulink interface....
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