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Monitoring blade loads for a floating wind turbine in wave basin model tests using Fiber Bragg Grating sensors: A feasibility study
Marine Structures ( IF 3.9 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.marstruc.2020.102729
Binrong Wen , Xinliang Tian , Zhihao Jiang , Zhanwei Li , Xingjian Dong , Zhike Peng

Abstract The blade loading contains sufficient information about the unsteady aerodynamics of Floating Wind Turbines (FWTs), and it serves as the basis for advanced controller developments. Wave basin model test is among the most reliable and economical methods for FWT investigations. However, few FWTs were reported being able to monitor the blade loads during wave basin tests. The main obstacles include strict space/mass limitations in model manufacturing and problems associated with signal transmission between rotating blades and stationary signal processing unit. In this paper, the feasibility of detecting blade loads for model FWT in wave basin tests is investigated. An on-line monitoring system is developed based on Fiber Bragg Grating (FBG) sensors and a Fiber Optical Rotary Joint (FORJ). Extensive validation tests are conducted under different environmental and operational conditions. Results show that the proposed FBG-FORJ sensing system presents impressive feasibility and reliability. As the authors know, it is among the first attempts to monitor the blade loads in real-time for model FWTs in wave basin tests. The present study will serve to enrich the knowledge about unsteady aerodynamics of FWTs and lay the foundation for experimental studies on advanced FWT controllers.

中文翻译:

使用光纤布拉格光栅传感器在波盆模型测试中监测浮动风力涡轮机的叶片载荷:可行性研究

摘要 叶片载荷包含有关浮动风力涡轮机 (FWT) 非定常空气动力学的足够信息,它是高级控制器开发的基础。波盆模型试验是 FWT 研究中最可靠、最经济的方法之一。然而,很少有 FWT 能够在波盆测试期间监测叶片载荷。主要障碍包括模型制造中严格的空间/质量限制以及与旋转叶片和固定信号处理单元之间的信号传输相关的问题。在本文中,研究了在波盆试验中检测 FWT 模型叶片载荷的可行性。基于光纤布拉格光栅 (FBG) 传感器和光纤旋转接头 (FORJ) 开发了在线监测系统。在不同的环境和操作条件下进行了广泛的验证测试。结果表明,所提出的 FBG-FORJ 传感系统具有令人印象深刻的可行性和可靠性。正如作者所知,这是在波盆测试中为模型 FWT 实时监测叶片载荷的首次尝试之一。本研究将有助于丰富有关 FWT 非定常空气动力学的知识,并为先进 FWT 控制器的实验研究奠定基础。
更新日期:2020-05-01
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