基于垂荡运动波浪能发电PTO系统阻尼研究  

Research on Damping of PTO System Based on Vertical Motion Wave Energy Power Generation

作　　者：平力 尚劲光 陈茂祥 凌云凤 刘眉洁[1] PING Li;SHANG Jinguang;CHEN Maoxiang;LING Yunfeng;LIU Meijie(College of Physics,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学物理科学学院,山东青岛266071

出　　处：《山东电力技术》2023年第9期28-34,共7页Shandong Electric Power

基　　金：国家自然科学基金项目(41976173);山东省自然科学基金项目(ZR2019MD016)。

摘　　要：波浪能作为海洋资源中储藏量最丰富的清洁能源,其发展前景十分广阔。因此,如何解决波浪能能量转换,实现波浪能最大层次的规模利用,是当前面临的关键问题。针对求解最优阻尼系数和最大发电功率,建立波浪能装置垂荡运动模型,分别讨论常数阻尼和线性阻尼两种情况下浮子和振子的垂荡运动以及对应的最优阻尼系数和发电功率。通过ODE45函数、变步长搜索法等精确求解得出:当系统采用常数阻尼时最大发电功率124.20 W,最优阻尼系数为37 940 N·s/m;当系统采用线性阻尼时最大发电功率为124.22 W,最优阻尼系数为46 025 N·s/m。As the most abundant clean energy in marine resources,wave energy has a broad development prospect.Therefore,how to solve the wave energy conversion and realize the maximum scale utilization of wave energy is the key problem at present.In order to solve the optimal damping coefficient and maximum power generation,the vertical motion model of the wave energy device is established,and the vertical motion of the float and oscillator under constant damping and linear damping are discussed respectively,as well as the corresponding optimal damping coefficient and power generation.Through precise solutions such as ODE45 function and variable step search method,it can be concluded that the maximum power generation power is 124.20 W when the system adopts constant damping,and the optimal damping coefficient is 37940 N·s/m;when the system adopts linear damping,the maximum power generation is 124.22 W,and the optimal damping coefficient is 46025 N·s/m.

关 键 词：波浪能 垂荡 阻尼系数 ODE45函数 变步长搜索法 

分 类 号：P743.2[天文地球—海洋科学] O17[理学—数学]