二阶波浪力对浮式风机系统动力响应的影响研究  

Research on the Influence of Second-order Wave Force on the Dynamic Response of Floating Wind Turbine

作　　者：曲晓奇 李红涛[1] 王宾 刘利琴[2] 李昊[2] 肖昌水 郭世博 QU Xiaoqi;LI Hongtao;WANG Bin;LIU Liqin;LI Hao;XIAO Changhui;GUO Shibo(Marine Engineering Technology Center of CCS,Tianjin 300457,China;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China)

机构地区：[1]中国船级社海洋工程技术中心,天津300457 [2]天津大学水利仿真与安全国家重点实验室,天津300072

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第5期883-889,共7页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：文中以OC4-DeepCwind海上浮式风机系统为例,考虑浮式基础运动与气动力之间的耦合,研究了二阶波浪力对浮式风机系统动力响应的影响.结果表明:二阶波浪力增加了浮式基础纵荡和纵摇运动的标准差,而浮式基础纵荡和纵摇对风机气动力有较大的影响,从而使得风轮的推力及功率波动都增大.因此,在风力机系统控制设计及风力机叶片结构设计时,需要充分考虑二阶波浪力的影响.此外,二阶和频力和塔柱一阶固有频率接近,激发了塔柱自振,在设计塔柱时应避开二阶和频力.Taking OC4-DeepCwind offshore floating fan system as an example,considering the coupling between floating foundation motion and aerodynamic force,the influence of second-order wave force on the dynamic response of floating fan system was studied.The results show that the second-order wave force increases the standard deviation of the pitching and pitching motion of the floating foundation,and the pitching and pitching of the floating foundation have great influence on the aerodynamic force of the wind turbine,thus increasing the thrust and power fluctuation of the wind turbine.Therefore,the influence of second-order wave force should be fully considered in the control design of wind turbine system and the structural design of wind turbine blades.In addition,the second-order sum-frequency force is close to the first-order natural frequency of the tower,which stimulates the natural vibration of the tower,so the second-order sum-frequency force should be avoided when designing the tower.

关 键 词：浮式风机 刚-柔耦合 二阶波浪力 动力影响分析 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]