A comparative study of fully coupled and de-coupled methods on dynamic behaviour of floating wind turbine drivetrains

An efficient fatigue assessment model of offshore wind turbine using a half coupling analysis

“…(19)(20) into Eqs. (23)(24), the drag force spectrum and inertial force spectrum can be further expressed…”

“…As the wind turbine size increases, it is questionable whether this de-coupled analysis method yields sufficiently accurate results. Wang et al [24] conducted a comparative study of the drivetrain dynamic behaviour obtained by a fully coupled method and a de-coupled one for a 10-MW floating wind turbine. This study showed that the de-coupled method could provide accurate results in the drivetrain fatigue damage.…”

Dynamic Behavior of a 10 MW Floating Wind Turbine Concrete Platform under Harsh Conditions

“…Therefore, some scholars have started to conduct research on concrete structure platforms with the following characteristics: good anti-corrosion performance, low cost, low maintenance expense, and environmentally friendly. Wang et al [24,25] analyzed the dynamic behavior of the drivetrain system of a concrete semi-submersible 10 MW floating wind turbine and the ultimate internal stress of the floating platform columns based on numerical simulation methods. Ahn et al [26] studied the dynamic response of a concrete semi-submersible floating wind turbine platform and found that changes in the wind-wave incident angle affected the motion response of the floating platform.…”

Characterisation of extreme load responses of a 10-MW floating semi-submersible type wind turbine

“…In addition, it has a heavier rotor-nacelle-assembly (RNA) system and a larger support structure which leads to larger inertial loads. Further, studies performed by Wang et al [ 11 , 12 ] indicated that larger wind turbines could be at risk of resonance. The larger rotor, nacelle structure and tower could be sufficiently flexible so their natural frequencies can be close to the low-frequency wind and wave excitations.…”