A self-floating oscillating surge wave energy converter
A self-floating oscillating surge wave energy converter
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DOI：
10.1016/j.energy.2021.120668
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发表时间：
2021-09
期刊：
影响因子：
9
通讯作者：
Qiaofeng Li;J. Mi;Xiaofan Li;Shuo Chen;Boxi Jiang;L. Zuo
中科院分区：
文献类型：
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作者：
Qiaofeng Li;J. Mi;Xiaofan Li;Shuo Chen;Boxi Jiang;L. Zuo
本文提出了一种新的振荡浪涌波能转换器的概念配置。这个概念是一个自浮装置，由两个垂直的襟翼组成，襟翼有一个共同的铰链，平均密度等于水。当入射波驱动时，两个襟翼将在相反的方向上振荡。动能将通过嵌入铰链的动力输出装置从两个襟翼之间的相对速度中提取。数值研究表明，自浮式装置具有较小的共振周期和最佳的动力输出阻尼相比，底部铰接的浮动装置的相同的总体尺寸。只要适当地调整动力输出阻尼，则无论铰链是固定的还是与系泊缆连接的，反向旋转机构在规则波和不规则波中都是有效的。由于具有自浮特征和反向旋转机制，所提出的概念可以通过对系泊缆施加显着较小的反作用载荷并消除对容纳动力输出装置的支撑框架的需要，从而潜在地有利于深海应用。各种设计参数的影响，如皮瓣尺寸，淹没深度，入射波的方向，和水深也进行了分析，所提出的概念进行综合评价。
This paper proposes a new conceptual configuration for oscillating surge wave energy converters. The concept is a self-floating device consisting of two vertical flaps with a common hinge and an averaged density equal to that of water. The two flaps will oscillate in opposite directions when driven by incident waves. Kinetic energy will be extracted from the relative speed between the two flaps by a power take-off embedded at the hinge. Numerical studies reveal that the self-floating device has a smaller resonant period and optimal power take-off damping compared with a bottom-hinged floating device of the same overall dimensions. As long as the power take-off damping is appropriately tuned, the opposite-rotation mechanism is valid in both regular and irregular waves, and no matter whether the hinge is fixed or connected with mooring lines. With the self-floating feature and opposite-rotation mechanism, the proposed concept can potentially benefit deep ocean applications by exerting a significantly less reaction loading on mooring lines and eliminating the need for a supporting frame to house the power take-off. The influence of various design parameters such as flap dimensions, submerged depth, incident wave direction, and water depth is also analyzed for a comprehensive evaluation of the proposed concept.