中文摘要：

海况是影响波浪能发电装置运行效率的因素之一。以浮摆式波能发电装置为基础，描述了其中摆板系统的收集原理；并基于AQWA（advancedquantitivewaveanalysis）水动力学计算软件，仿真计算了三种波况下各摆板的运动响应，发现波向为45°角是摆板系统的最佳运行角度；当波高不超过0．6m时，摆板的运动状态较易趋于平衡。另外，提出了一种估算摆板采集波能的平均转换效率的方法，并基于相关拟合函数软件，计算了5种较理想波况下摆板采集波能的平均能量转换效率，结果发现，波浪的周期和波高越大，摆板的波能采集效率越低。

英文摘要：

Sea condition is one of the factors that affects wave energy converter＇ s operating efficiency. Based on the floating and pen- dular type wave energy converter, the energy-collection principle of the pendulum system in a floating and pendular type wave energy converter is described in the paper, and the movement response of the pendulums under three wave conditions is simulated based on AQWA software. It is shown that the optimum wave direction for pendulum system＇ s operation is 45°; and the pendulum is apt to reach equilibrium state when wave height is less than 0.6m. In addition, a method to estimate the average wave energy conversion efficiency of the pendulum system is proposed, with which the efficiencies under five ideal wave conditions are calculated. It is shown that the longer the wave period and the higher the wave height, the lower the energy collection efficiency of the pendulum.