浸没式参数激励摆波能转换装置能量俘获特性研究

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摘要引入参数激励摆的非线性机制，应用于波浪能发电装置，并根据实际波浪低频、低幅值激励特性，提出浸没式单摆波能转换装置，研究其在规则波中的能量俘获情况。基于势流理论，针对垂荡运动，建立非线性运动方程，进行数值求解，分析摆球质量比、激励频率、幅值和系统阻尼对能量俘获效率的影响，并与空气中单摆的能量俘获效率进行对比。结果表明：合理选取质量比，可降低浸没式参数激励摆固有频率；与空气中单摆相比，浸没式参数激励摆在低频、小振幅的波浪激励环境下，俘获能量频谱带宽更宽，发电功率更高。

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	王彤彤1
	2
	肖龙飞1
	2
	杨立军1
	2

关键词 ：波浪能发电装置, 非线性机制, 参数激励摆, 能量俘获功率

Abstract：Here, the nonlinear mechanism of a parametrically excited pendulum was introduced and applied in wave energy converters.According to real wave’s excitation features of low frequency and small amplitude, a submerged simple pendulum wave energy converter was proposed to study its energy capture law in regular wave.Based on the potential flow theory, the nonlinear equation of motion for swing motion was built and solved numerically.Effects of pendulum ball mass ratio, excitation frequency and amplitude as well as system damping on energy capture efficiency were analyzed and compared with the energy capture efficiency of a simple pendulum in air.The results showed that appropriately choosing mass ratio can reduce natural frequency of a submerged parametrically excited pendulum; compared with a simple pendulum in air, energy capture frequency band width of a submerged parametrically excited pendulum is wider under wave excitation environment with low frequency and small amplitude, so its power generation power is higher.

Key words： wave energy converter nonlinear mechanism parametrically excited pendulum energy capture power

收稿日期: 2018-07-08 出版日期: 2020-01-28

引用本文:

王彤彤1,2，肖龙飞1,2，杨立军1,2. 浸没式参数激励摆波能转换装置能量俘获特性研究[J]. 振动与冲击, 2020, 39(3): 199-204.
WANG Tongtong1,2, XIAO Longfei1,2, YANG Lijun1,2. Energy capture feature of wave energy converter with submerged parametric excitation pendulum. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(3): 199-204.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I3/199

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