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Edinburgh, United Kingdom

Smith K.,Aquamarine Power Ltd.
Underwater Technology

The following paper presents the differences in the development of the Danish and UK wind industry in order to highlight key issues that led to their respective success and failure. By comparing the political, economic, social and technological policies that have defined the growth of the two industries, the paper contends that the lack of a clear and consistent market price support mechanism together with a slow planning process and delayed grid access were significant weaknesses in the UK. It also suggests that these factors must be addressed to ensure the same barriers do not stunt the growth of the UK marine renewable industry. To maintain the lead in an emerging marine energy industry, the UK government must facilitate strong public support for wave and tidal energy in parallel with assisting with R&D and project capital grants. Clear and consistent policy with regard to price support mechanisms and priority access to the grid are necessary to ensure a stable and reliable market. Lessons learned from the success of the Danish wind industry must be applied if the UK wishes to secure a stronghold in this market. Source

Henry A.,Aquamarine Power Ltd. | Rafiee A.,University College Dublin | Schmitt P.,Queens University of Belfast | Dias F.,University College Dublin | Whittaker T.,Queens University of Belfast
Proceedings of the International Offshore and Polar Engineering Conference

Wave impacts on an Oscillating Wave Surge Converter are examined using experimental and numerical methods. The mechanics of the impact event are identified experimentally with the use of images recorded with a high speed camera. It is shown that it is the device which impacts the wave rather than a breaking wave impacting the device. Numerical simulations using two different approaches are used to further understand the issue. Good agreement is shown between numerical simulations and experimental measurements at 25th scale. Source

Schmitt P.,Queens University of Belfast | Windt C.,TU Hamburg - Harburg | Nicholson J.,Aquamarine Power Ltd. | Elsasser B.,Queens University of Belfast
European Journal of Mechanics, B/Fluids

During extreme sea states so called impact events can be observed on the wave energy converter Oyster. In small scale experimental tests these impact events cause high frequency signals in the measured load which decrease confidence in the data obtained. These loads depend on the structural dynamics of the model. Amplification of the loads can occur and is transferred through the structure from the point of impact to the load cell located in the foundation. Since the determination of design data and load cases for Wave Energy Converters originate from scale experiments, this lack of confidence has a direct effect on the development. Numerical vibration analysis is a valuable tool in the research of the structural load response of Oyster to impact events, but must take into account the effect of the surrounding water. This can be done efficiently by adding an added mass distribution, computed with a linearised potential boundary element method. This paper presents the development and validation of a numerical procedure, which couples the OpenSource boundary element code NEMOH with the Finite Element Analysis tool CodeAster. Numerical results of the natural frequencies and mode shapes of the structure under the influence of added mass due to specific structural modes are compared with experimental results. © 2016 The Authors. Published by Elsevier Masson SAS. Source

Aquamarine Power Ltd. | Date: 2010-07-22

A wave energy conversion apparatus comprises:-a mechanical element arranged in operation to move repeatedly in a cycle in response to wave motion, wherein the speed of the mechanical element varies between a maximum and a minimum during each cycle; power extraction means arranged to extract energy from the movement of the mechanical element; and movement assistance means arranged to assist the movement, in response to the wave motion, of the mechanical element, during at least one part of the cycle during which the speed of movement of the mechanical element is substantially equal to the minimum for that cycle, wherein the power extraction means comprises a fluid pressurisation system that is arranged so that in operation fluid in the fluid pressurisation system is pressurised in response to movement of the mechanical element, the fluid pressurisation system comprises a one-way valve for transferring pressurised fluid from the fluid pressurisation system and the movement assistance means is located upstream of the one-way valve.

Agency: Cordis | Branch: H2020 | Program: MSCA-ITN-EID | Phase: MSCA-ITN-2015-EID | Award Amount: 804.64K | Year: 2016

This initiative proposes an innovative training environment for 3 ESRs in a supportive environment provided by an award-winning progressive wave energy company (Aquamarine Power Ltd) and a research centre at the forefront of innovation in wave energy device optimisation and control (the Centre for Ocean Energy Research at NUIM). The ESRs will be recruited by COER and will be seconded for 50% of their time to APL. There is a clear need for a training programme that integrates academic and industrial contributions. The proposed programme integrates formal and informal training activities with a rich set of industry-academic research projects, supported by significant secondment to the industrial partner and experience with real-world tank and ocean testing, wave-energy device deployment and implementation of new research results in state-of-the-art wave energy technology. The ESRs will be enrolled in a Structured PhD programme at NUIM, and will benefit from a series of structured training models. The training programme is complemented by a set of network-wide training activities. The research programme is composed of 3 closely-knit projects in the research area of wave energy and ocean energy, which allow the ESRs to have significant interaction, yet providing each ESR with an independent set of objectives and the opportunity to play a significant role in the rapidly developing area of wave energy conversion. With a clear global requirement to provide new energy sources, this programme aims to contribute to both the rapid commercialisation of a viable and economic wave energy technology, while also providing a pipeline of well-trained engineers with research, technical and commercial skills which are badly needed by this rapidly-expanding industrial sector.

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