Abstract Inspired by observing the motions of vessels at sea, the E-Motions has been proposed as an innovative concept capable of converting wave (and wind) induced roll oscillations on multipurpose offshore floating platforms into electricity. The device can be integrated, theoretically, into any type of offshore floating structure, given its simple 3-component design: floating platform, encasing and sliding Power Take-Off. This latter component can be sheltered from the marine environment by being placed within a casing, at deck level, or the hull of the offshore structure. With so much potential for application at sea, it was important to subject the E-Motions to an initial proof-of-concept, as done for other wave energy converters. This paper presents and discusses the main results and conclusions of an experimental study, carried out with a 1:40 reduced scale physical model, aimed at demonstrating the technical and technological viability of the E-Motions. It was found that, for the considered study variables, the device can operate without major incident and convert electricity from wave induced roll oscillations. Four ballast configurations were considered, of which two yielded higher power outputs. The average measured power reached as high as 11 kW and 13 kW, respectively, with the values reducing for wave period further away from the resonance range and lower wave heights. Power Take-Off damping was found to be an important variable that can considerably influence the energy generation process, yet it will be imperative to further assess this variable in combination with other pertinent variables, such as an external attached mass and different generators. This is key to better understand and describe the complex and non-linear relationship between the motions of the Power Take-Off and the floating platform components.

中文翻译：

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基于多用途海上浮动平台横摇振荡的波浪能转换器概念验证研究

摘要 受观察海上船舶运动的启发，E-Motions 被提出作为一种创新概念，能够将多用途海上浮动平台上的波浪（和风）引起的横摇振荡转换为电能。理论上，该设备可以集成到任何类型的海上浮动结构中，因为它具有简单的 3 组件设计：浮动平台、外壳和滑动取力器。后一个部件可以通过放置在外壳内、甲板水平面或海上结构的船体中而免受海洋环境的影响。由于在海上应用的潜力如此之大，像其他波浪能转换器一样，对 E-Motion 进行初步概念验证非常重要。本文介绍并讨论了一项实验研究的主要结果和结论，该实验研究采用 1：40 缩小比例的物理模型，旨在展示 E-Motion 的技术和技术可行性。发现，对于所考虑的研究变量，该设备可以在没有重大事故的情况下运行，并从波浪引起的滚动振荡中转换电能。考虑了四种镇流器配置，其中两种产生更高的功率输出。平均测量功率分别高达 11 kW 和 13 kW，随着远离谐振范围和较低波高的波周期值减小。动力输出阻尼被发现是一个可以显着影响能量产生过程的重要变量，但必须结合其他相关变量（例如外部附加质量和不同的发电机）进一步评估该变量。