基于AQWA的浮子式发电装置能量效率分析

Analysis of Energy Efficiency of Floating Generator Based on Software AQWA

以浮子式发电装置为研究对象,根据绕射/辐射理论,利用AQWQ软件建立计算模型,分析多自由度波能转换装置的水动力性能,并利用相应的理论公式计算出其所吸收的波浪能以及能量的初步转换效率。分析结果表明:垂荡运动是该浮子式发电装置吸收能量的主要来源.此外若在一定周期内考虑浮子的纵摇运动,浮子式发电装置将能获得更多的能量,使得浮子式发电装置的效率得到进一步提高.

The paper concerns hydrodynamic performance of the wave energy converter(WEC) with multi-degree of freedom. Based on the theory of diffraction and radiation, software AQWQ is used to establish a numerical model. Corresponding theoretical formula is applied to calculate the absorption of the initial wave energy and energy conversion efficiency. The numerical results show that the heave motion is the main source of energy absorbed by this type of power generation device. Considering the pitching motion of the WEC in a certain wave period, the generator will be able to get more energy, which makes the efficiency being further improved.