可再生能源2017，Vol.35Issue(9)：1368-1374,7.
主振动与内振动联合作用下大型风电机组 塔架-叶片耦合结构动力学分析
Dynamic analysis of large wind turbine tower blade coupling structure under combined vibration and internal vibration
摘要
Abstract
Considering the interaction of main vibration and internal vibration in large scale wind turbine tower blade coupling structure,a three-dimensional structural dynamic model is established by using the finite element software Solidworks,according to the dynamic response of the structure. Based on the displacement strain relationship and potential energy theory,modal analysis is carried out,the dynamic response of the fluctuating wind load is analyzed emphatically. The result shows that the maximum thrust amplitude of the large scale wind turbines tower blade coupling structure is 0.12 m,the amplitude increases gradually with the increase of load,there is intermittent oscillation in reverse precession. There is no sharp change in the top of the tower phase difference,the mean value is 30 rad,which can eliminate the fixed phase difference caused by synchronous operation. The horizontal displacement at the top of the tower has few changes,the maximum horizontal displacement is 0.55 m. The results provide a reference for the condition monitoring of large wind turbines during the operation of vibration and fluctuating wind loads.关键词
振动/联合作用/结构动力学/状态监测/耦合Key words
vibration/combined action/structural dynamics/condition monitoring/coupling分类
能源科技引用本文复制引用
程友良,薛占璞,王文阳,王敬双,刘萌..主振动与内振动联合作用下大型风电机组 塔架-叶片耦合结构动力学分析[J].可再生能源,2017,35(9):1368-1374,7.基金项目
中央高校基本科研业务费专项资金项目(2016XS107). （2016XS107）
