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Step-WEC: STEP CHANGE FOR WAVE ENERGY CONVERSION THROUGH FLOATING MULTI-BODY MULTI-MODE SYSTEMS IN SWELL

Step-WEC：通过 SWELL 中的浮动多体多模系统实现波能转换的阶跃变化

基本信息

批准号：
EP/K012487/1
负责人：
Peter Stansby
金额：
$ 81.32万
依托单位：
University of Manchester
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2013
资助国家：
英国
起止时间：
2013 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FK012487%2F1
关键词：
Step WEC STEP CHANGE WAVE

项目摘要

Marine energy should make a substantial contribution to the UK renewable energy target of 30% electricity by 2020 and the potential of wave energy is high. However wave energy conversion requires a step change in power output per unit cost to be readily commercially viable. Here we address the question 'what is the maximum power which can be converted if structure size is no object and if several modes of motion are exploited for power conversion?' We further know that the system must be floating to avoid the high costs of fixed, bed-mounted structures. The intention here is to investigate multi (initially two) body systems with multiple mode motion providing superposition of energy output from the different modes of motion. A particular form of two-body device with heave and pitch has in fact been devised (and patented) and high efficiency has been demonstrated in the lab, showing the potential. We are particularly interested in ever-present, predominantly regular, swell waves providing a base load. For small swell around the west of UK periods are predominantly in the 9-11 s range and a system would be tuned to exploit these waves, knowing that for larger waves substantial generation is straightforward. However the interaction of swell and random (wind) waves is an important but unexplored consideration in this context. Generic methodologies need to be applied for operational testing and large-scale deployment. To investigate complex multi-body multi-mode response methodologies need to be developed. Mooring loads also need to be evaluated for intermediate-to-deep water. The important aspect of extreme loading and survivability will not be specifically covered in this project but links will be made with the on-going Supergen Marine Challenge projects X-MED and SMARTY. The overall aim is thus to design, analyse and optimise floating systems for wave energy conversion of approximately 10 MW capacity in swell and mixed swell/wind waves based on two or more dynamically connected bodies with multi-mode response and to assess their interaction, particularly power generation, within an array.

海洋能源应该为英国到2020年实现30%电力的可再生能源目标做出重大贡献，波浪能的潜力很大。然而，波浪能转换需要每单位成本的功率输出的阶跃变化才容易在商业上可行。在这里，我们解决的问题是什么是最大的权力，可以转换，如果结构尺寸是没有对象，如果几种模式的运动被利用的权力转换？“我们还知道，该系统必须是浮动的，以避免固定的、安装在床上的结构的高成本。这里的目的是调查多（最初是两个）体系统与多模式运动提供叠加的能量输出从不同的运动模式。事实上，一种特殊形式的具有升沉和俯仰的两体装置已经被设计出来（并获得专利），并且在实验室中已经证明了其高效率，显示了其潜力。我们特别感兴趣的是始终存在的，主要是规则的，提供基本载荷的涌浪。对于英国西部周围的小涌浪，周期主要在9-11秒范围内，系统将被调整以利用这些波浪，知道对于较大的波浪，大量的生成是直接的。然而，在这种情况下，涌浪和随机（风）波的相互作用是一个重要的，但未探索的考虑。在业务测试和大规模部署中需要采用通用方法。为了研究复杂的多体多模态响应方法，需要开发。还需要评估中深水的系泊载荷。极端负载和生存能力的重要方面将不会在这个项目中具体涉及，但链接将与正在进行的超级海洋挑战项目X-MED和SMARTY。因此，总体目标是设计、分析和优化浮式系统，用于基于具有多模式响应的两个或更多个动态连接的主体在涌浪和混合涌浪/风浪中进行约10 MW容量的波浪能转换，并评估它们在阵列内的相互作用，特别是发电。