随机风浪作用下漂浮式风力机MTMD振动控制研究

基于多体动力学理论,通过二次开发,基于FAST-SC建立漂浮式风力机-多重调谐质量阻尼器（MTMD）耦合振动控制模型FAST-SC-MTMD。以驳船式海上风力机为研究对象,基于线性调频优化方法完成布置于机舱和平台位置的TMD参数设计。以漂浮式风力机结构运动响应控制率为评价指标,研究在随机荷载激励下将TMD和MTMD应用于在驳船式风力机的减振效果。研究发现,采用机舱和平台同时布置MTMD的减振控制策略,可有效降低驳船式风力机塔基荷载和运动响应。

VIBRATION CONTROL OF FLOATING OFFSHORE WIND TURBINE UNDER STOCHASTIC WIND AND WAVE LOADS USING MULTIPLE TUNED MASS DAMPER

Based on the theory of multi-body dynamics, the coupled analysis model named FAST-SC-MTMD of floating offshore wind turbine with multiple tuned mass damper（MTMD） is established in the recompiled FAST-SC. Taking the barge-type offshore wind turbine as research object, the parameters are designed using the recommended optimization formulas for MTMD in offshore engineering. Then, the mitigation effects of TMD and MTMD are evaluated based on the reductions of structural responses of the floating offshore wind turbine under stochastic environmental loads. It can be seen that the pitch frequency should be prior designated as the MTMD tuning frequencies and the MTMD should be mounted in the nacelle and platform, in order to mitigate the motions of the tower and floating platform effectively.