浮式海上风力发电机阻尼分析:一种降低平台振动的新控制策略

IF 3.6 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Wind Energy Science Pub Date : 2023-08-24 DOI:10.5194/wes-8-1319-2023
Matteo Capaldo, Paul Mella
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引用次数: 0

摘要

摘要本文对浮动平台与风力发电机转子的耦合动力学进行了分析。特别地,阻尼是由转子和浮动平台的耦合方程显式导出的。通过对阻尼的分析,可以对不稳定现象进行研究,从而得到导致非最小相位零的显式条件。分析了两种nmpz,一种与转子动力学有关,另一种与平台俯仰动力学有关。后者引入了一种新颖性,并为其验证提供了明确的条件。第二部分从浮式平台的阻尼分析出发,提出了一种浮式海上风力机的控制新策略。这种策略允许在不改变平台俯仰周期的情况下,在平台俯仰运动中对控制器施加明确的阻尼水平,以适应风速和操作条件。最后,通过对参考fot进行气动-液压-伺服-弹性数值仿真,将新策略与无补偿策略和无自适应补偿策略进行了比较。通过对产生的功率、运动、叶片节距和塔基疲劳进行比较,表明新的控制策略可以在不影响功率产生的情况下减少结构的疲劳。
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Damping analysis of floating offshore wind turbines (FOWTs): a new control strategy reducing the platform vibrations
Abstract. In this paper, the coupled dynamics of the floating platform and the wind turbine rotor are analyzed. In particular, the damping is explicitly derived from the coupled equations of the rotor and floating platform. The analysis of the damping leads to the study of instability phenomena, thus obtaining the explicit conditions that lead to the non-minimum phase zero (NMPZ). Two NMPZs are analyzed, one related to the rotor dynamics and the other one to the platform pitch dynamics. The latter introduces a novelty, and an explicit condition is provided in this work for its verification. In the second part of the paper, from the analysis of the damping of the floating platform, a new strategy for the control of floating offshore wind turbines (FOWTs) is proposed. This strategy allows one to impose on the controller an explicit level of damping in the platform pitch motion that adapts with wind speed and operating conditions without changing the period of platform pitching. Finally the new strategy is compared to one without compensation and one with a non-adapting compensation by performing aero-hydro-servo-elastic numerical simulations of a reference FOWT. Generated power, motions, blade pitch and tower base fatigue are compared, showing that the new control strategy can reduce fatigue in the structure without affecting the power production.
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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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