The effect of wave period filtering on wave power extraction and device tuning
The effect of wave period filtering on wave power extraction and device tuning
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DOI：
10.1016/j.oceaneng.2006.08.003
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发表时间：
2007-06
影响因子：
5
通讯作者：
V. Venugopal;George H. Smith
中科院分区：
文献类型：
--
作者：
V. Venugopal;George H. Smith
本文研究了滤除短周期波后，波能转换器可利用的波能的变化情况。为此目的，使用在北欧周围三个不同地点和水深记录的海浪数据以及数值合成的海浪时间序列。对于每个数据集，计算波功率比，定义为经过滤波的数据和未经滤波的数据的波功率之比，并研究这个量随滤波程度的变化。定义了两个新的参数R和S来量化这种滤波对波周期和波高变化的影响。结果表明，去除短周期波对可供提取的功率影响不大，但可显著降低波能转换器实现最佳功率转换所需的重新调谐速率。
The variations in the quantity of wave power available to a wave energy converter by filtering out short-period waves have been examined in this paper. Ocean wave data recorded at three different locations and water depths around northern Europe are used for this purpose along with numerically synthesized wave time series. A wave power ratio, defined as the ratio between the wave power for the filtered and unfiltered data, is calculated for each data set, and the variation of this quantity with the degree of filtering is investigated. Two new parameters namely, R and S are defined to quantify the effect of this filtering on the variation of wave-to-wave period and height. It is shown that removing the shorter period waves has little effect upon the power available for extraction but may significantly reduce the rate at which the wave energy converter must retune to achieve optimum power conversion.