主动共振波能技术优化方法研究

Study on the optimization method for the technology of WECs being in resonance at any time

现有研究波能转换效率的文献一致得出:最优波能转换效率是在波能系统处于共振状态。这已经成为研究者的共识。前期对点吸收波能装置研究认为:浮体与水构成的系统,其自振频率远高于实际波浪的频率,在现实中不可能实现波能系统共振。从文献上看,到目前为止,世界上还没有人实现波能系统共振。主动共振波能技术是一个利用共振实现高效波能转换的技术,通过数值仿真试验证明了主动共振波能装置可以在实际海浪周期范围实现共振。对主动共振波能装置的效率作了研究,发现依据线性化后的波能系统振型对波能装置进行优化设计,可大幅提高波能装置的效率。同时也证明了主动共振波能装置的效率高。主动共振波能技术有望开启利用共振实现高效波能转换之门,实现高效波能利用技术。

The available literature indicates that the wave energy converting system(WECS)in resonance has optimal conversion efficiency which has been the consensus of researchers.The study of the point absorption WECs in the early stage shows that the natural frequency of the system formed by floating body and water is much higher than that of the actual wave.It is impossible to realize the resonance of WECS.From the literature,until now,no one in the world has realized the resonance of WECS.The technology of WECs being in resonance at any time(TWECRT)is a technology using resonance to achieve highly efficient wave energy converting.Through numerical simulation experiments,it is proved that TW ECRT can realize resonance in the actual wave period range.In this paper,the efficiency of TW ECRT is studied.It is found that the optimization design of WECs based on the vibration mode of the linearized WECS can greatly improve its efficiency.At the same time,the high eftciency of TW ECRT is also proved.TW ECRT is expected to open the door to realize high efficiency of wave energy converting by resonance,and realize efficient wave energy utilization technology.