Dynamics and Control of a Novel Wave-Augmented Floating Offshore Wind Turbine

新型波浪增强浮式海上风力发电机的动力学与控制

• 批准号: 2323927
• 负责人: Ossama Abdelkhalik
• 金额: $ 38.64万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2323927&HistoricalAwards=false
• 关键词: Dynamics; Control; Novel; Wave; Augmented

This grant will fund research that enables innovation in the controlled use of combined aero- and hydrodynamic loading on floating offshore wind turbines to increase energy extraction and reduce platform mass -- resulting in a reduction in the levelized cost of electric power harvested for a key renewable energy generation technology -- thereby promoting the progress of science and advancing the national prosperity. To operate stably under extreme wind and wave conditions, floating offshore wind turbines are designed to be large and heavy. The floating platform alone occupies a significant portion of the overall capital expenditures. This project investigates a novel physical design and innovative control architecture that leverages the coupling between wind and wave power to allow stability requirements to be satisfied by a lighter floating platform, while also enhancing the energy-capturing efficiency. By integrating a wave-augmented control authority with the floating platform, the project aims to establish a foundational paradigm for leveraging wave power rather than mitigating its influence. An integrated outreach program for high school students and development of web-based resources on wind and wave energy for high school teachers aim to broaden participation in STEM, including to individuals from currently underrepresented groups.This research aims to develop the theoretical foundations for an innovative physical design and associated control logic that allows wave-driven pressure in closed-air chambers inside the foundation of a floating offshore wind turbine to both attenuate its motion and drive an auxiliary turbine. It accomplishes this outcome through a synergistic analytical, computational, and experimental study of the coupled hydro-, aero-, and thermodynamic behavior of the wave-augmented physical system, as well as the development of a control architecture rooted in sliding mode control, which ensures optimal performance also under environmental uncertainty. A robust aerodynamic time-domain load formulation is developed using a scaled-aeroelastic, boundary-layer wind-tunnel model of the turbine superstructure on a dynamic platform that simulates wave-induced base motion. System and control parameters are optimized concurrently using a stochastic search strategy.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这笔赠款将资助研究，使创新能够控制使用浮动海上风力涡轮机上的组合空气动力学和流体动力学载荷，以增加能量提取和减少平台质量-从而降低为关键的可再生能源发电技术收获的电力的平准化成本-从而促进科学进步和促进国家繁荣。为了在极端的风浪条件下稳定运行，漂浮式海上风力涡轮机被设计得又大又重。仅浮式平台就占据了整体资本支出的很大一部分。该项目研究了一种新颖的物理设计和创新的控制架构，利用风能和波浪能之间的耦合，通过更轻的浮动平台来满足稳定性要求，同时还提高了能量捕获效率。通过将波浪增强控制机构与浮动平台相结合，该项目旨在建立一个利用波浪能而不是减轻其影响的基础范例。针对高中生的综合推广计划和为高中教师开发的风能和波浪能网络资源旨在扩大对STEM的参与，包括目前代表性不足的群体中的个人。这项研究旨在为创新的物理设计和相关的控制逻辑开发理论基础，浮式离岸风力涡轮机的基座内的空气室，以既衰减其运动又驱动辅助涡轮机。它完成了这一成果，通过一个协同的分析，计算和实验研究的耦合水，空气和热力学行为的波增强物理系统，以及发展的控制架构植根于滑模控制，确保最佳性能也在环境的不确定性。在模拟波浪引起的基础运动的动态平台上，使用涡轮机上部结构的比例气动弹性边界层风洞模型，开发了鲁棒的气动时域载荷公式。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。