Numerical evaluation of a two-body point absorber wave energy converter with a tuned inerter
Numerical evaluation of a two-body point absorber wave energy converter with a tuned inerter
复制标题
带有调谐惯性器的两体点吸收波能转换器的数值评估
DOI:
10.1016/j.renene.2021.02.021
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发表时间:
2021
期刊:
影响因子:
8.7
通讯作者:
Sugiura Keita
中科院分区:
文献类型:
--
作者:
Asai Takehiko;Sugiura Keita
To increase the amount of energy captured from a vibrating buoy in the ocean with a simple mechanism, this paper proposes a two-body point absorber wave energy converter (WEC) with a tuned inerter. The tuned inerter mechanism consists of a spring, a linear damping element, and a component called inerter. This mechanism was originally proposed in the field of civil engineering as a structural control device which can absorb energy from vibrating structures effectively by taking advantage of the resonance effect of the inerter part. In addition to this mechanism where a generator is used as the linear damping element, the current of the generator for the power take-off system is controlled based on the algorithms proposed in literature to achieve further improvement of the power generation capability. In this research, a detailed analytical model of the proposed WEC is introduced and developed. Then the power generation performances of full-scale WEC models are assessed through numerical simulation studies using WAMIT software and it is shown that the current-controlled WEC with the proposed mechanism achieves an 88% increase compared to the conventional one for the JONSWAP spectrum with 6 s peak period and 1 m significant wave height.
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