Dynamics of Offshore Wind Turbine Platforms

海上风力发电机平台的动力学

• 批准号: 105684-2013
• 负责人: Nahon, Meyer
• 金额: $ 3.28万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=545198
• 关键词: Dynamics; Offshore; Wind; Turbine; Platforms

Wind energy is now acknowledged to be the most economically viable form of alternative energy---in some cases producing power at lower cost than conventional sources. Energy produced by wind turbines also has certain drawbacks, including intermittency and opposition by local interest groups. Placing wind turbines offshore can overcome some of these obstacles: offshore wind is stronger and more consistent, and the turbines are largely out of sight, thus attracting less opposition. To date, all offshore wind turbine installations have been 'fixed-bottom': the supporting platform is rigidly anchored to the seabed, in depths of 20-30 m. However, there is increasing interest in placing turbines farther offshore on floating platforms, in depths of hundreds of meters. An offshore floating wind turbine is composed of a horizontal axis turbine atop a tall mast. The mast is mounted on a buoyant platform, of which there are many types, and that platform is anchored to the seabed by an array of cables. The dynamics of these systems is complex due to the flexibility of the turbine blades, the boom and the tethers. The research proposed here focuses on the dynamics and design of these multi-tethered offshore platforms. The goal is to evaluate proposed designs, and eventually to propose new designs, based on analysis of these systems. Our past experience in analogous multi-tethered buoyant systems provides us many uncommon insights into the behavior of these complex systems.

风能现在被认为是最经济可行的替代能源形式——在某些情况下，其发电成本比传统能源更低。风力涡轮机产生的能源也有一定的缺点，包括间歇性和当地利益集团的反对。将风力涡轮机放置在海上可以克服其中一些障碍：海上风力更强、更稳定，而且涡轮机基本上在视线之外，因此引起的反对较少。迄今为止，所有海上风力涡轮机装置都是“固定底部”的：支撑平台牢固地锚定在 20-30 m 深度的海床上。然而，人们越来越有兴趣将涡轮机放置在离岸更远的浮动平台上，深度为数百米。海上浮动风力涡轮机由高桅杆顶部的水平轴涡轮机组成。桅杆安装在浮力平台上，浮力平台有多种类型，该平台通过一系列电缆固定在海床上。由于涡轮叶片、吊杆和系绳的灵活性，这些系统的动力学非常复杂。这里提出的研究重点是这些多系留海上平台的动力学和设计。目标是评估提议的设计，并最终根据对这些系统的分析提出新的设计。我们过去在类似的多系留浮力系统中的经验为我们提供了对这些复杂系统行为的许多不寻常的见解。