Analysis and optimization of a Dual Mass-Spring-Damper (DMSD) wave-energy convertor with variable resonance capability
Analysis and optimization of a Dual Mass-Spring-Damper (DMSD) wave-energy convertor with variable resonance capability
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具有可变谐振能力的双质量-弹簧-阻尼器（DMSD）波能转换器的分析和优化
DOI：
10.1016/j.renene.2018.07.006
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发表时间：
2019
期刊：
影响因子：
8.7
通讯作者：
Chen Z
中科院分区：
文献类型：
--
作者：
Chen Z
为了适应波浪周期变化的海洋环境，提出了一种新型点式减振器的概念：一种全封闭的双质量-弹簧-阻尼器（DMSD）浮子系统，该系统具有一个内部质量和弹簧，通过改变可动内部质量和弹簧，可以改变其共振频率。在防水浮子中，这种单自由度起伏能量转换器可以漂浮或淹没，以避免过大的风暴载荷。首先，在频域中的内部质量，弹簧和阻尼系统的优化开发，以证明有利的捕获宽度是可实现的入射波频率的范围。其次，在时域内研究了该系统在ISSC海浪谱中的功率响应和运动响应。与恒定阻尼的功率起飞，DMSD系统被发现有明显较低的捕获宽度在不规则波比在规则波在一个频率是相同的峰值波频率的频谱。由于过度的相对运动可能会发生在不规则波激励，终端停止，模拟刚性弹簧和强阻尼器，应用在时域仿真。当适当设计时，当应用端部止动件时，发现在不规则波环境中捕获宽度仅下降1-2%。
To adapt to an ocean environment of changing wave period, a novel point-absorber concept is proposed: a fully-enclosed Dual Mass-Spring-Damper (DMSD) floater system that has an internal mass and spring so that its resonance frequency can be varied by changing the movable internal mass and spring. In a waterproof floater, this one-degree-of-freedom heaving energy converter can float or be submerged to evade excessive storm load. Optimization of the internal mass, spring and damping system in the frequency domain is first developed to demonstrate that favorable capture width is achievable for a range of incident-wave frequency. Next, power and motion response of this system in an ISSC wave spectrum are studied in time domain. With constant damping for power-takeoff, the DMSD system is found to have noticeably lower capture width in irregular waves than that in regular waves at a frequency that is the same as the peak wave frequency of the spectrum. Since excessive relative motion can occur in irregular-wave excitation, end-stops, modeled by a stiff spring and strong damper, are applied in the time-domain simulation. When properly designed, degradation of only 1–2% in the capture width in the irregular-wave environment is found when end-stops are applied.
双筒波能转换器的性能：单自由度与二自由度
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
Lu Wang;Daewoong Son;R. W. Yeung
通讯作者：
R. W. Yeung
加州大学伯克利分校波浪能提取器的分析、设计和评估
DOI：
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发表时间：
2010
期刊：
影响因子：
--
作者：
R. W. Yeung;A. Peiffer;Nathan Tom;T. Matlak
通讯作者：
T. Matlak
与内部质量发生反应的隆起点吸收器
DOI：
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发表时间：
1986
期刊：
影响因子：
--
作者：
M. French;R. Bracewell
通讯作者：
R. Bracewell