一种串联式双浮体直驱式波浪发电系统的设计与试验研究

Design and experiment of a series connection floating two-body direct-drive wave energy generation system

针对传统的直驱式波浪发电系统安装不便以及俘获波浪能能力弱的问题,文章提出了一种漂浮串联式双浮体直驱式波浪发电系统。该系统的两个浮体水平漂浮在波浪中,Halbach永磁直线发电机的初级与次级分别安装在两个浮体之间的侧面,两个浮体均可俘获波浪能,提升了系统的波浪能俘获能力。该系统还具有结构简单、易于制造与维护的优点。文章利用制作的原型样机在波浪水槽中进行了试验。试验结果表明,在波高为16 cm,浮体吃水为16 cm,在波浪周期从1.2 s增大到2.4 s的波况下,原型样机的平均发电功率在1.8 s处取得最大值6.54 W。比较双浮体原型样机与单浮体样机后发现,在波浪周期较大的范围内,双浮体原型样机输出的平均发电功率一直高于单浮体样机。

Considering the inconvenient installation and the poor ability to capture wave energy in the traditional direct-drive wave energy converter(DD-WEC),a series connection floating twobody DD-WEC is proposed in this paper.Two rectangular bodies of the WEC float horizontally in the waves bodies and both capture the wave energy.The primary and secondary of the Halbach array permanent magnet linear generator(HPMLG)are respectively installed on the lateral surface between the two floating bodies.Because both floating bodies capture wave energy,the ability of the WEC to capture wave energy is improved,and the structure of the WEC is simple and easy to manufacture and maintain.Then,the prototype of the two-body DD-WEC is manufactured and tested in the wave tank in this paper.The experimental results show that in the case with the wave height of 16 cm and the draft of 16 cm,the average generated power of the prototype reaches the maximum value of 6.54 W at the wave period of 1.8 s,when the wave period ranges from 1.2 s to 2.4 s.Finally,the two-body DD-WEC prototype is compared with the single-body DD-WEC prototype.The results show that the average power output of the two-body DD-WEC prototype is always higher than that of the single-body DD-WEC prototype in a large range of wave period.