振荡浮子式波能装置的功率计算分析及参数设计

Power calculation analysis and parameter design of an oscillating float wave energy device

波浪能是重要的可再生资源之一,提高波浪能装置的能量捕获率是波浪能规模化利用的关键。本文对波浪能的能量转换装置进行了研究,针对装置于不同摇荡条件下的最大平均输出功率、最优阻尼系数及相关参数进行演化分析及求解。利用牛顿定律及质心系、转动惯量等建立二自由度、四自由度波浪能转换装置耦合运动模型,基于时间离散化的差分原理求解,同时采用模拟退火算法降低时间复杂度,提出了改良的粒子群算法,得到较为准确的结果,为实际工程中波浪能的高效采集提供思路和途径。

Wave energy is one of the important renewable resources,and enhancing the energy capture rate of wave energy devices is the key to the application of wave energy on a large scale.In this study,the energy conversion de-vice for wave energy is investigated,evolutionary analysis is conducted,and a solution for the maximum average out-put power,optimal damping coefficient,and related parameters of the device under different oscillation conditions is presented.The coupled motion model of 2 degrees of freedom and 4 degrees of freedom wave energy conversion de-vices is developed based on Newton′s law,center of mass system,and moment of inertia.The solution is based on the difference principle of time discretization.Meanwhile,the simulated annealing algorithm is employed to reduce the time complexity,and a better particle swarm algorithm is innovatively proposed to acquire more accurate results.This study presents novel ideas and methods for high-efficiency acquisition of wave energy in practical projects.