波浪能浮子与半潜式风机基础的耦合作用OA

In this study,the hydrodynamic coupling mechanism in a hybrid offshore energy system integrating wave-energy converters(WECs;specifically wave-energy buoys)with semi-submersible floating offshore wind turbine(FOWT)foundations is investigated.Employing the WEC-Sim toolbox,a semi-physical numerical model of the hybrid system is established to analyze the influences of the wave-excitation force of WEC and its power take-off(PTO)system damping on the motion response of the FOWT foundation.The analysis is performed across various wave conditions:regular wave,irregular wave,and integrated wind-wave.The results reveal that the control effect of the WEC on the FOWT platform deviates substantially from that of a traditional tuned mass damper system owing to the effect of the wave-excitation force.Consequently,the control effect of the WEC is not consistently beneficial for suppressing the motion of the platform,thus underscoring the necessity for active and semi-active control strategies.Furthermore,incorporating wave-energy devices will alter the natural period of the floating platform,which is shown to decrease inversely with increasing PTO damping.Crucially,increasing the PTO damping will significantly suppress the fundamental frequency response of the foundation.