风浪联合作用下5 MW三桩固定式风机动力特性响应

Dynamic Responses of 5 MW Tripod Fixed Offshore Wind TurbineUnder Wave and Wind Joint Loads

以NREL 5 MW为目标风机,参考OC3 Tripod风机尺寸参数,考虑风浪联合作用,取水深45 m,建立三脚架固定式近海风机整机模型,比较定常风、湍流风以及不同风速对应的风电系统工作状态对风机动力特性响应的影响。结果表明:在对风机结构进行强度校核时,出于安全考虑,应使用湍流风模型计算分析风机整机模型;风机在工作状态下会受到较大的气动载荷,需着重研究工作状态下的风机姿态和结构特性。

With reference to the structural parameters of NREL 5 MW wind turbine and OC3 Tripod support structure,considering the joint action of wind and wave with the water depth of 45 m,the fully coupled model of OC3 Tripod fixed offshore wind turbine is established to compare the influence of steady wind,turbulent wind and wind system operation conditions corresponding to different wind speeds on the dynamic responses of the wind turbine.The results show that:the turbulence wind model should be used in the strength check process for safety;the state and structure characteristics of the wind turbine in work condition should be studied emphatically,since it will be subjected to larger aerodynamic loads.