脉冲尾流混合策略与浮动式风力涡轮机之间的动态耦合

IF 3.6 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Wind Energy Science Pub Date : 2023-05-31 DOI:10.5194/wes-8-849-2023
Daniël Van Den Berg, D. De Tavernier, J. van Wingerden
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引用次数: 1

摘要

摘要近年来,诸如动态感应控制(通常称为“脉冲”)等控制技术在增加尾流混合方面显示出巨大的潜力,其目标是最小化风力发电场内涡轮与涡轮之间的相互作用。动态感应控制通过改变涡轮推力随时间的变化来干扰尾迹,从而导致时变感应区。如果应用于浮动风力涡轮机,这种时变推力除了改变尾流外,还会改变平台的运动。鉴于预期的运动,这项工作研究了将脉冲应用于浮动风力涡轮机是否会产生与应用于底部固定涡轮机相似的结果。这是通过首先考虑由于施加时变推力而引起的浮动风力涡轮机运动的大小,其次考虑这些运动对尾迹混合的影响来实现的。频率响应实验表明,浮动涡轮的运动与推力的频率密切相关。采用均匀入流的自由尾迹涡旋方法进行时域仿真,结果表明,在相同脉冲下,在下游5转子直径处的平均风速预期增益比底部固定涡轮对激励频率更为敏感。这是因为在一定频率下,平台运动减少了推力变化,从而减少了尾流混合的发生。
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The dynamic coupling between the pulse wake mixing strategy and floating wind turbines
Abstract. In recent years, control techniques such as dynamic induction control (often referred to as “the pulse”) have shown great potential in increasing wake mixing, with the goal of minimising turbine-to-turbine interaction within a wind farm. Dynamic induction control disturbs the wake by varying the thrust of the turbine over time, which results in a time-varying induction zone. If applied to a floating wind turbine, this time-varying thrust force will, besides changing the wake, change the motion of the platform. In light of the expected movement, this work investigates if applying the pulse to a floating wind turbine yields similar results to that of the pulse applied to bottom-fixed turbines. This is done by considering first the magnitude of motions of the floating wind turbine due to the application of a time-varying thrust force and secondly the effect of these motions on the wake mixing. A frequency response experiment shows that the movement of the floating turbine is heavily frequency dependent, as is the thrust force. Time domain simulations, using a free-wake vortex method with uniform inflow, show that the expected gain in average wind speed at a distance of 5 rotor diameters downstream is more sensitive to the excitation frequency compared to a bottom-fixed turbine with the same pulse applied. This is due to the fact that, at certain frequencies, platform motion decreases the thrust force variation and thus reduces the onset of wake mixing.
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来源期刊
Wind Energy Science
Wind Energy Science GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY-
CiteScore
6.90
自引率
27.50%
发文量
115
审稿时长
28 weeks
期刊最新文献
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