Shaking table test and simulation study on CS-NES vibration control of offshore wind turbine

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering Pub Date : 2025-06-02 DOI:10.1016/j.soildyn.2025.109548

Yijing Lu , Haoran Chen , Yuhang He , Jiawei Li , Tong Guo , Xin Chen , Jiale Yuan , Zhiqiang Zhang

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Abstract

Based on the vibration response characteristics of monopile OWTs (Offshore Wind Turbines), this study investigates the feasibility of employing NES (Nonlinear Energy Sinks) for vibration reduction through a combination of experimental tests and numerical simulations. A CS (Conical Spring)-NES device with nonlinear stiffness is designed using conical springs, and its dynamic performance and vibration control effects are validated through shaking table tests. A numerical prototype-model of a 6.45 MW OWT prototype is established to compare the vibration control of NES and a linear TMD (Tuned Mass Damper). The results indicate that the CS-NES is capable of activating the SMR (Strongly Modulated Responses), exhibiting excellent robustness even under conditions such as stiffness errors and compression asymmetry, and significantly improving the OWT stability under various excitation scenarios. Compared to TMD, NES demonstrates superior performance in frequency band tuning and high-order frequency response control, particularly in controlling the response around resonant-frequency. This study provides valuable theoretical insights and practical guidance for nonlinear vibration control of OWTs.

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海上风力机CS-NES振动控制振动台试验与仿真研究

基于单桩海上风力发电机组的振动响应特性，通过实验试验与数值模拟相结合的方法，探讨了采用非线性能量汇（NES）进行减振的可行性。采用锥形弹簧设计了一种非线性刚度的CS（圆锥弹簧）-NES装置，并通过振动台试验验证了其动力性能和振动控制效果。建立了一台6.45 MW OWT样机的数值原型模型，比较了NES与线性调谐质量阻尼器的振动控制效果。结果表明，CS-NES能够激活SMR（强调制响应），即使在刚度误差和压缩不对称等条件下也表现出优异的鲁棒性，并显著提高了各种激励情景下的OWT稳定性。与TMD相比，NES在频段调谐和高阶频率响应控制方面表现优异，特别是在控制谐振频率周围的响应方面。该研究为非线性振动控制提供了有价值的理论见解和实践指导。

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来源期刊

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

期刊介绍： The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering. Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.