以水平偏心摆波能装置为对象,通过物理模型试验和数值模拟,对装置在单自由度和多自由度下的运动和获能规律进行研究。不同波周期下,摆体出现小幅振荡、旋转和振荡旋转三种运动状态。研究表明,装置在单自由度下出现对获能不利的“锁停”现象,而多自由度的获能相对较好,平均功率随波浪周期出现两次峰值。第一次峰值对应波周期与能量输出（PTO）阻尼和摆臂长度正相关,峰值与PTO阻尼正相关;第二次峰值及对应波周期与外浮体轴比正相关。
Abstract
In this article, the horizontal eccentric pendulum wave energy converter with single and multiple degrees of freedom are characterized through numerical simulations and model tests. Three states of the pendulum's motion are observed at different wave periods including small amplitude oscillation, pure rotation, and oscillating rotation. It is noted that the pendulum has a “lock-up” phenomenon in the device with a single degree of freedom, while in the multi-degree of freedom the pendulum can avoid such phenomenon and performs better. There are two peaks of the average power with respect to the wave period. The first peak is positively correlated with PTO damping, and its period is positively correlated with the PTO damping and the swing arm length. The second peak and period are both positively correlated with the axis ratio of outer float.
关键词
波浪能转换 /
浮体 /
摆体 /
轴比 /
摆臂长度 /
PTO阻尼
Key words
wave energy converter /
buoys /
pendulum /
axis ratio /
swing arm length /
PTO damping
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基金
山东省自然科学基金（ZR2021ZD23）; 国家自然科学基金（52071303）; 中国工程院战略研究与咨询项目（2022-DFZD-36）; 泰山学者工程专项经费资助（ts20190914）
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