同轴双浮体波能装置最优获能研究  

STUDY ON OPTIMAL POWER CAPTURE OF COAXIAL TWO-BODY WAVE ENERGY CONVERTER

作　　者：董晓晨[1] 李德敏 史宏达[1,2,3,4] Dong Xiaochen;Li Demin;Shi Hongda(College of Engineering,Ocean University of China,Qingdao 266100,China;Shandong Provincial Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China;Qingdao Municipal Key Laboratory of Ocean Renewable Energy,Ocean University of China,Qingdao 266100,China;Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China)

机构地区：[1]中国海洋大学工程学院,青岛266100 [2]中国海洋大学山东省海洋工程重点实验室,青岛266100 [3]青岛市海洋可再生能源重点实验室,青岛266100 [4]青岛海洋科学与技术试点国家实验室,青岛266237

出　　处：《太阳能学报》2021年第3期228-234,共7页Acta Energiae Solaris Sinica

基　　金：国家重点研发计划(2018YFB1501904);国家自然科学基金(52071303);山东省科技重大专项(2019JZZY010902)。

摘　　要：该文以同轴双浮体波能装置为研究对象,通过理论分析建立运动方程,求解线性能量摄取(PTO)作用下的最优阻尼系数及最大输出功率。同时探究了装置能量捕获的影响因素及控制策略,提出一种具有普遍意义的最优获能估算公式。研究结果表明:双浮体波能装置可通过调节PTO阻尼力使得获能最大化,且较单浮体装置具有更宽的能量俘获频率范围;不同PTO控制策略及水体粘性阻尼均对该类装置获能影响显著。The dynamic equations of the coaxial two-body wave energy converter(WEC)are established in this paper. The optimal damping coefficient and the maximum output power under linear PTO damping force are solved by theoretical analysis. A new method of estimating the maximum power is presented. The results show that the two-body WEC can maximize the energy capture by adjusting the PTO damping,which widens the energy capture frequency band width compared with the single-body WEC and has better energy capture performance in specific sea areas. What’s more,the effect of the control strategies and viscous damping force has also investigated.

关 键 词：波浪能 波能转换 控制系统 最优获能 同轴双浮体 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程]