Nearshore oscillating wave surge converters and the development of Oyster
Nearshore oscillating wave surge converters and the development of Oyster
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DOI：
10.1098/rsta.2011.0152
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发表时间：
2012-01-28
期刊：
影响因子：
5
通讯作者：
Folley, Matt
中科院分区：
文献类型：
--
作者：
Whittaker, Trevor;Folley, Matt
振荡波涌流转换器 (OWSC) 是一类波浪发电技术，利用水深 10-20 m 的近岸沿海地区波浪增强的水平流体颗粒运动。 OWSC 主要在波浪中水平振荡，而大多数波浪装置则在升沉中垂直振荡，通常部署在更深的水中。描述了近岸波浪资源的特征以及 OWSC 的流体动力学。讨论了 OWSC 设计空间中的变量，并介绍了它们对捕获宽度、频率带宽响应和功率输出特性的一些影响。全球正在开发的不同 OWSC 之间存在显着差异，这些差异都得到了强调。本文的最后部分介绍了 Aquamarine Power 的 315kW Oyster 1 原型机，该原型机于 2009 年 8 月部署在欧洲海洋能源中心。描述了它在 OWSC 设计空间中的地位以及所获得的实际经验。这促成了 Oyster 2 的设计，并于 2011 年 8 月部署。结论是，近岸 OWSC 是波浪能技术组合中的有力竞争者。近岸波浪气候的方向传播比近海更窄，最大的波浪被过滤掉，并且与 50 m 深度相比，10 m 深度的可开采资源通常仅减少 10-20%。关于这些设备，一个关键结论是 Oyster 等 OWSC 主要在工作频率范围内响应水平流体加速度； Oyster 不是响应水平流体速度的阻力装置。 Oyster 的流体动力学主要由惯性决定，其中附加惯性是一个非常重要的贡献者。由于波浪资源、水动力和经济限制，单个襟翼模块的装机容量不太可能超过 1 MW。发电站将由翼片线阵列组成，每 5-10 台具有公共二次电力转换。
Oscillating wave surge converters (OWSCs) are a class of wave power technology that exploits the enhanced horizontal fluid particle movement of waves in the nearshore coastal zone with water depths of 10-20 m. OWSCs predominantly oscillate horizontally in surge as opposed to the majority of wave devices, which oscillate vertically in heave and usually are deployed in deeper water. The characteristics of the nearshore wave resource are described along with the hydrodynamics of OWSCs. The variables in the OWSC design space are discussed together with a presentation of some of their effects on capture width, frequency bandwidth response and power take-off characteristics. There are notable differences between the different OWSCs under development worldwide, and these are highlighted. The final section of the paper describes Aquamarine Power's 315kW Oyster 1 prototype, which was deployed at the European Marine Energy Centre in August 2009. Its place in the OWSC design space is described along with the practical experience gained. This has led to the design of Oyster 2, which was deployed in August 2011. It is concluded that nearshore OWSCs are serious contenders in the mix of wave power technologies. The nearshore wave climate has a narrower directional spread than the offshore, the largest waves are filtered out and the exploitable resource is typically only 10-20% less in 10 m depth compared with 50 m depth. Regarding the devices, a key conclusion is that OWSCs such as Oyster primarily respond in the working frequency range to the horizontal fluid acceleration; Oyster is not a drag device responding to horizontal fluid velocity. The hydrodynamics of Oyster is dominated by inertia with added inertia being a very significant contributor. It is unlikely that individual flap modules will exceed 1 MW in installed capacity owing to wave resource, hydrodynamic and economic constraints. Generating stations will be made up of line arrays of flaps with communal secondary power conversion every 5-10 units.