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首页> 外文期刊>Wind Energy >Platform stabilization and load reduction of floating offshore wind turbines with tension-leg platform using dynamic vibration absorbers
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Platform stabilization and load reduction of floating offshore wind turbines with tension-leg platform using dynamic vibration absorbers

机译：带有动态减震器的张力腿平台浮动海上风力发电机的平台稳定和减轻负荷

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摘要

Floating offshore wind turbines (FOWT) are subject to significant increases in structural loads due to the platform motion under turbulent wind and wave. The under-actuation challenge in FOWT control demands for development of extra actuators for platform stabilization. For FOWT with tension-leg platform (TLP), this paper presents a comprehensive study on design and control simulation for realizing active mooring line control via the deployment of vertically operated dynamic vibration absorbers (DVAs) at the spokes of TLP structure. The DVA is designed based on the suppression of the primary modes of platform pitch and roll motion. In addition to the enhancement of FAST-based simulation module, an 11 degrees-of-freedom (DOFs) control-oriented model is derived for the TLP-FOWT-DVA system. Based on the control-oriented model, a linear quadratic regulator (LQR) controller is designed. Simulations are performed for 9 m/s and 18 m/s turbulent winds with different wind and wave directions. The wind turbine performance, platform motions, and structural fatigue loads are evaluated. The results show that the platform motion and tower loads in the lateral direction are significantly reduced, while the tower load in the fore-aft direction can be moderately reduced. Also, significant reduction in the mooring line tension loads is observed. For achieving the performance in platform motion stabilization and load reduction, the average power consumption of the DVA actuators is less than 0.27% of the wind turbine power generated during the simulated periods. The figures of merits promise significant potential for the feasibility of DVA based control for TLP-FOWT.
机译：浮式海上风力涡轮机（FOWT）由于在风和浪的湍流下平台运动而使结构载荷显着增加。 FOWT控制中的促动器不足挑战要求开发额外的促动器以实现平台稳定。对于带有张力腿平台（TLP）的FOWT，本文对设计和控制仿真进行了全面的研究，以通过在TLP结构的辐条上部署垂直操作的动态吸振器（DVA）来实现主动系泊缆的控制。 DVA是基于抑制平台俯仰和侧倾运动的主要模式而设计的。除了增强了基于FAST的仿真模块之外，还为TLP-FOWT-DVA系统导出了面向11个自由度（DOF）的面向控制的模型。基于面向控制的模型，设计了线性二次调节器（LQR）控制器。针对风向和波向不同的9 m / s和18 m / s湍流进行了仿真。评估风机性能，平台运动和结构疲劳载荷。结果表明，平台运动和塔架在横向方向上的载荷显着减小，而塔架在前后方向上的载荷则可以适当地减小。而且，观察到系泊缆线张力载荷显着降低。为了实现平台运动稳定和减少负载的性能，DVA执行器的平均功耗小于仿真期间产生的风力发电机功率的0.27％。优点数字有望为基于TVA-FOWT的基于DVA的控制的可行性提供巨大潜力。

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