水上机场助航波能灯浮标的波能俘获优化

Optimization of wave energy capture of wave-powered navigational lighting buoys of seadromes

[目的]为了对水上机场波能灯浮标进行设计优化,以工作于沿海水上机场的阵列式助航波能灯浮标为研究对象,提出一种小型阵列式浮标的优化设计方法。[方法]基于三维势流理论,计算浮标的垂荡运动响应,在满足最佳能量转换部分(PTO)阻尼匹配的情况下,得到使能量俘获宽度比最大的浮标直径吃水比和浮标间距,然后对单个浮标的能量俘获进行短期预报,并在此基础上结合实际海况对阵列式浮标的能量俘获进行长期预报,分别讨论浮标直径、吃水和浮标间距对阵列式浮标能量俘获的影响。[结果]结果表明,当单个浮标直径吃水比为2.4~2.6时,能量俘获宽度比最大;阵列浮标间距越小,阵列式助航波能灯浮标的能量俘获宽度比越大。[结论]所做的工作可为阵列式波浪能发电装置的设计优化提供一定的参考和建议。

[Objectives] This paper proposes an optimized design for wave-power navigational lighting buoys of seadromes. [Methods] Based on the theory of three-dimensional potential flow, the buoyant motion response of a buoy is calculated. A type of array of wave-power navigational lighting buoys located in an offshore seadrome is proposed, and a procedure for the design optimization of its component buoys is presented. Matching the best Power Take-Off （PTO） damping, the diameter to draft ratio and array distance with the best energy capture width ratio are acquired, and the energy capture for the short-term forecast of the buoy array is accomplished. On this basis, combined with the actual sea conditions, energy capture for the long-term forecast of an individual buoy is accomplished. The influence of the buoy diameter, buoy draft and array distance on the energy capture width ratio is discussed. [Results] The results show that the energy capture width ratio is at its greatest when the diameter to draft ratio is between 2.4-2.6; the smaller the distance between array buoys, the greater the energy capture width of each buoy. [Conclusions] The results can provide a reference and suggestions for the optimization of the design of wave energy generation for arrays buoy .