摘要
以振荡浮子式波浪能发电装置为研究对象，探讨在串联不同数量直线发电机的情况下装置在规则波中的能量捕获情况。基于势流理论，并考虑垂荡运动，建立浮子与电机的耦合运动方程，应用四阶龙格库塔法数值求解，得到能量捕获宽度比，并对能量输出系统质量比和弹簧刚度系数的影响进行研究，对串联不同数量直线发电机情况下能量捕获的差异进行分析。结果表明：适当选取参数，串联装置可在波浪频率较低时比单个发电机的装置捕获更多能量，同时能量吸收频谱带宽增加。
The oscillating float wave energy converter was studied to explore energy harvesting status of linear generators with different series number in regular waves. Floater and motor coupling motion equation was set up based on potential flow theory and considering heaving motion, the fourth-order Runge-Kutta method was used to solve the equation numerically to get energy harvesting width ratio, and study the influence of energy output system mass ratio and spring stiffness coefficient, also analyze the differences of energy harvesting in the case of series linear generators with different numbers. The results showed that with proper parameter selection, tandem devices can capture more energy at lower wave frequencies than single-generator devices, meanwhile increasing the energy-absorbing spectrum bandwidth.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2018年第2期398-405,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金重点项目(51239007)
海洋工程国家重点实验室自主研究课题
关键词
波浪能发电装置
浮子
串联发电机
能量捕获宽度比
频谱带宽
wave energy converter
floater
serially connected generators
power capture width ratio
spectrum bandwidth
