TMD控制对15 MW单桩风力机地震动力响应的影响  

Influence of TMD control on dynamic responses of a 15 MW monopile offshore wind turbine

作　　者：余洁 秦志豪 杨阳 Yu Jie;Qin Zhihao;Yang Yang(Faculty of Maritime and Transportation,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学海运学院,浙江宁波315211

出　　处：《可再生能源》2024年第1期57-63,共7页Renewable Energy Resources

基　　金：浙江省自然科学基金探索青年类项目(LQ22E090001)。

摘　　要：地震带附近的海上风力机不仅受到风浪载荷的影响,还面临地震灾害威胁。为降低地震对大型风力机结构振动及载荷的影响,文章通过对开源软件FAST进行二次开发,基于模态加速度法和调谐质量阻尼器(TMD)编写了海上风力机地震动力学仿真及结构控制程序,以IEA 15 MW单桩风力机为对象,研究了不同自然地震动作用下TMD控制频率对塔架抑振降载效果的影响。结果表明:对于选定地震动,TMD均可大幅降低风力机塔顶位移与塔基载荷;当调谐频率比为0.9时,TMD对塔顶位移控制效果最佳,可降低塔顶位移89.8%;当调谐频率比为0.8时,TMD可显著降低地震后的塔基载荷波动幅度,标准差最高可降低99%。Offshore wind turbines installed close to earthquake-prone zones are not only affected by wind and wave loadings,but also threatened by earthquakes.In order to reduce the earthquake impacts on the structural vibration and load of large-scale wind turbines,a seismic coupled analysis and structural control architecture has been developed by improving FAST based on the modal acceleration method and the Tuned Mass Damper(TMD).The control effects of TMD on tower vibration and load reduction of the IEA 15 MW monopile wind turbine due to different ground motions are investigated.The results show that the TMD can significantly reduce the tower-top displacement and tower-base load for each examined ground motion.The best effect on alleviating tower-top vibration is achieved when the tuning frequency ratio of the TMD is 0.9,reducing the tower top displacement by 89.8%.The fluctuation amplitude of tower-base bending moment following the earthquake event is significantly reduced by the TMD with a tuning frequency ratio of 0.8 that is capable of reducing the standard deviation by up to 99%.

关 键 词：海上风力机 动力学响应 地震载荷 结构控制 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]