当前位置: X-MOL 学术Mar. Struct. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Passive control of jacket–type offshore wind turbine vibrations by single and multiple tuned mass dampers
Marine Structures ( IF 4.0 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.marstruc.2021.102938
Da Chen , Shanshan Huang , Chenggeng Huang , Ruiwen Liu , Feng Ouyang

Vibration control is gaining focuses in the field of offshore wind turbines (OWTs) in recent years as the turbine tower becomes taller and more slender. Although a number of research works have been carried out to control the OWT vibrations, using tuned mass damper (TMD) and multiple tuned mass dampers (MTMDs) to control the jacket–type OWT vibrations is rarely reported, especially for the MTMDs, of which the application in the field of OWTs is still in the initial stage. This study focuses on the performance of TMD and MTMDs in controlling the tower vibrations of the jacket–type OWT subjected to the combined wind, wave and current loads, which are the most common external vibration resources for OWTs. The control effectiveness is numerically investigated and evaluated by the reductions of the standard deviation displacement (σ(d)) and the standard deviation acceleration (σ(a)) of the tower top. After the installation of TMD, σ(d) and σ(a) are reduced by 32% and 29% respectively. Larger TMD mass ratios lead to better control effectiveness, but the improvement becomes less obvious as the mass ratios constantly increase. The control effectiveness of the MTMD system is slightly decreased compared with a single large TMD. However, the robustness of MTMDs is superior since the OWT vibrations can still be controlled effectively even if some TMDs do not function. The control effectiveness of the MTMD system can also be affected by the change in the positions of malfunctioned TMDs.



中文翻译:

通过单调谐和多调谐质量阻尼器对夹套式海上风力发电机的振动进行被动控制

近年来,随着涡轮机塔变得越来越高和越来越纤细,振动控制正成为海上风力涡轮机(OWT)领域的焦点。尽管已经进行了许多研究来控制OWT振动,但是很少有报道使用调谐质量阻尼器(TMD)和多重调谐质量阻尼器(MTMD)控制夹套式OWT振动,特别是对于MTMD, OWTs领域的应用仍处于起步阶段。这项研究的重点是TMD和MTMD在控制夹套式OWT的塔架振动方面的性能,这些塔式OWT在风,浪和电流共同作用下是OWT的最常见外部振动资源。通过减少标准偏差位移(σ(d))和塔顶的标准偏差加速度(σ(a))。安装TMD后,σ(d)和σ(a)分别降低了32%和29%。较大的TMD质量比会导致更好的控制效果,但是随着质量比不断增加,改进效果变得不那么明显。与单个大型TMD相比,MTMD系统的控制效果略有下降。但是,MTMD的鲁棒性更高,因为即使某些TMD不能运行,OWT振动仍然可以得到有效控制。MTMD系统的控制有效性也会受到故障TMD位置变化的影响。

更新日期:2021-02-02
down
wechat
bug