Integrated aeroelastic and control analysis of wind turbine blades equipped with microtabs
Integrated aeroelastic and control analysis of wind turbine blades equipped with microtabs
复制标题
配备微片的风力涡轮机叶片的集成气动弹性和控制分析
DOI：
10.1016/j.renene.2014.09.032
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发表时间：
2015
期刊：
影响因子：
8.7
通讯作者：
A. Maheri
中科院分区：
文献类型：
--
作者：
T. Macquart;A. Maheri
本文介绍了对配备微型标签的风力涡轮机叶片主动负载控制中不同控制器性能的研究结果。综合了开关式（BB）控制器、线性二次调节器（LQR）、比例积分微分（PID）和滑模控制器（SMC）来减轻负载。通过采用WTAC（风力涡轮机气动弹性与控制）来评估综合控制器在负载减轻方面的性能，WTAC是一种风力涡轮机模拟器，包含非定常空气动力学模块、结构分析模块和控制模块。采用变速变桨距控制 NREL-5 MW 作为案例研究。使用频域分析表明，对于所研究的情况，所有控制器在抑制第一旋转频率负载方面具有或多或少相同的性能。它还表明，所有控制器在抑制较低频率的负载方面都更有效。 BB 和 PID 控制器虽然能够抑制低频负载，但可能会导致高频负载的放大。研究风力涡轮机在不同风速下的四个控制器的性能，观察到 BB 和 PID 控制器的有效性随风速降低，但另一方面 SMC 和 LQR 在较高风速下表现更好。引入一个新参数——寿命指数，研究了不同控制器在驱动磨损方面的性能。结果表明，与 SMC 相比，LQR 导致的驱动磨损更少，同时在负载减轻方面具有相当的性能。
This paper presents the results of an investigation into the performance of different controllers in active load control of wind turbine blades equipped with microtabs. A bang–bang (BB) controller, a linear quadratic regulator (LQR) a proportional integral derivative (PID) and a sliding mode controller (SMC) are synthesised for load alleviation. The performance of the synthesised controllers in load alleviation is evaluated by employing WTAC (Wind Turbine Aeroelastic and Control), a wind turbine simulator incorporating an unsteady aerodynamic module, a structural analysis module and a control module. The variable-speed pitch-controlled NREL-5 MW is adopted as the case study. Using frequency domain analysis it is shown that for the studied case all controllers have more or less the same performance at rejecting the first rotational frequency loads. It is also shown that all controllers are more effective at rejecting loads with lower frequencies. BB and PID controllers, although capable of rejecting low frequency loads, may cause amplification of loads with higher frequencies. Investigating the performance of four controllers at different wind speeds for the studied wind turbine, it is observed that the effectiveness of BB and PID controllers reduces with wind speed but on the other hand SMC and LQR perform better at higher wind speeds. Introducing a new parameter, life index, the performance of different controllers in terms of the actuation wear is investigated. It is shown that LQR cause less actuation wear compared to SMC, while having comparable performance in load alleviation.