Optimisation of wave-power arrays without prescribed geometry over incident wave angle

被引：0

作者：

McGuinness J.P.L. ^{[1
]}

Thomas G. ^{[2
]}

机构：

[1] Department of Mathematics, Cork Institute of Technology

[2] Department of Applied Mathematics, University College Cork

来源：

International Marine Energy Journal | 2021年 / 4卷 / 01期

关键词：

Arrays; Interaction; Optimisation; Point absorber; Wave-power;

D O I：

10.36688/imej.4.1-10

中图分类号：

学科分类号：

摘要：

This paper describes the optimisation of arrays of wave energy converters (WECs) of point absorber type. The WECs are spherical in shape and operate in heave only. Previous work is extended to an optimisation of array layouts without a prescribed geometry. The objective function is chosen as the mean of the array interaction factor over a prescribed range of incident wave angles. This formulation forces the array to perform optimally over a specified range of wave angle, without direct concern for wavelength variations. Both constrained and unconstrained WEC motions are considered, with constrained optimisations limiting device displacements to two or three times the incident wave amplitude. The increased freedom in this more general optimisation results in a 70% to 140% increase in objective function values compared to the analogous linear array optimisations. As in previous studies of this nature, unconstrained arrays tend to contain closely spaced WECs and larger displacement amplitudes, whereas constrained optimal arrays are more widely spaced. It is shown that the prescribed range of incident wave angle has a great effect on the optimal array layout, with better performance achieved for smaller ranges of wave angle due to better tuning of the array members. A previously identified trade-off in linear arrays, between performance stability to different incident wave parameters, is shown not to apply to general array layouts. © 2021, European Wave and Tidal Energy Conference. All rights reserved.

引用

页码：1 / 10

页数：9

共 15 条

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