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- Conference Paper:
Walker and Thies
Many technical challenges have been addressed since the first commercial deployment of a tidal stream turbine in 2003. However, the technology is not yet competitive with other renewable energy generation in cost of energy terms, and there remains a reluctance among investors due to the perceived risk of device failure. In this work we reviewed and categorised all available tidal stream energy…
- Book Chapter:
Scriven et al.
A Power Take-Off (PTO) is a core sub-system of a Wave Energy Converter (WEC) related to the conversion of wave to electrical power. The PTO is exposed to challenging environmental loading conditions that characterise wave energy. This paper investigates how the PTO developed by the UMBRAGROUP in the H2020 IMAGINE project could be considered for multiple WEC configurations. In particular, the…
- Journal Article:
Cañedo et al.
A single-body point absorber system is analysed to improve its power absorption at a finite water depth. The proposed wave energy converter consists of a single floating body coupled to a direct-drive power take-off system placed on the seabed. The structure of a cylindrical buoy with large draft is changed by a single body composed of three structures rigidly coupled, reducing its volume and…
- Journal Article:
Mohammadian et al.
Owing to the massive tidal range, available in major hypertidal estuaries along Ungava Bay (Canada), highly predictable tidal-stream power could be an optimal and clean alternative resource for the off-grid Northern communities. However, it is important to understand how the cold and long Arctic winter affects the availability of this resource. The Koksoak hypertidal estuary was studied…
- Journal Article:
Herduin et al.
The interaction between fibre rope and steel parts on vessels (fairlead and roller) is technically well understood but not commonly published in codes or practised by mariners. What appears to be a smooth steel surface to the naked eye can still be abrasive medium to synthetic mooring components. There are very few reports of external rope abrasion tests in the literature. The surface finish…
- Report:
Clarkson
Fundy Ocean Research for Energy (FORCE), Offshore Energy Research Association (OERA) and Operational Excellence Consulting Inc. have teamed up to capture lessons learned from marine operations in the Minas Passage. The project involves information that is shared from developers and contractors who have been performing marine operations in the past number of years. The purpose is to help the…
- Journal Article:
Mehdi et al.
This work focuses on the development of a deterministic dynamic risk method that can be used by operational endusers such as seafarers, when navigating in restricted waters where there is spatial conflict due to multi-use of marine areas by the shipping and offshore renewable energy industries. The developed method can also be used during the planning stages of offshore renewable energy…
- Journal Article:
Li et al.
The US Navy Wave Energy Test Site (WETS) is currently operating three grid-connected berths off Marine Corps Base Hawaii in support of technological development through scaled-model testing and pre-commercial prototyping. The location on the east shore of Oahu is open to year-round wind waves and seasonal north swells as well as severe seas from subtropical systems and hurricanes. We have…
- Report:
WavePiston
The project covers a demonstration of the Wavepiston wave energy concept. Numerical tools for estimation of structural design loads and absorbed power for the concept were developed, together with a tool to model the motion of the complete string structure. A 1:2 scale installation was designed, built and installed in the North Sea. With several iterations made on the detailed design during…
- Report:
WavePiston
As preparation for deployment of the 1:3 scale WEC, a 1:9 scale system has been developed designed and build.
As test site for the 1:9 model the test site at Nissum Bredning was chosen. The waters at Nissum Bredning are not as energetic as waves in the North Sea. Thus, Nissum Bredning is almost an ideal location for a scaled down test to validate the future 1:3 model.
The 1:9…
- Conference Paper:
Marquis et al.
Wave Star A/S has produced and installed a test and demonstration Wave Energy Converter (WEC) by Roshage pier near Hanstholm at the west coast of Denmark. The test unit is a prototype/test section of a complete commercial WEC. Only a few days after the installation, which took place in September 2009, the first storm with wind speeds above 30 m/s passed. During the winter more storms have…
- Report:
Black & Veatch
MeyGen Phase 1A is a 6MW demonstration tidal stream energy array comprised of four 1.5MW tidal turbines in the Inner Sound of Scotland’s Pentland Firth. The project formerly entered its 25-year operations phase in April 2018. As the first multi-MW tidal array, MeyGen Phase 1A is a trail blazer for the industry. The lessons learnt throughout the design, construction and initial operations…
- Report:
Villate et al.
Electricity production in 2050 will need to be emissions-free, low cost and flexible. To reach that objective, we will need demand-side management, storage and most importantly, all flexible renewables at our disposal – whether established already or still innovative today.
Europe’s ocean energy resource is considerable. By 2050, ocean energy can deliver 100GW of capacity – equivalent…
- Thesis:
Hudson
In the coming decades, offshore renewable energy is expected to play a crucial role in the decarbonisation of global electricity supply essential for limiting anthropogenic greenhouse gas emissions to an acceptable level. The cost of utilising expensive vessels to install and maintain these marine energy devices represents a significant proportion of their life-cycle cost and one of the major…
- Journal Article: Howe and Nader
OWC WEC integrated within a breakwater versus isolated: Experimental and numerical theoretical study
Oscillating Water Column (OWC) devices are one of the most promising technologies to be implemented into already existing or in-development ocean structures, such as breakwaters. All moving components to retrieve power from the waves are well above the waterline and the still structure can be easily incorporated within solid edifices. In this paper, we investigate the hydrodynamic response of…
- Journal Article:
Gonzalez-Gorbena et al.
This paper investigates the optimum tidal energy converter array density at a tidal inlet by applying surrogate-based optimisation. The SBO procedure comprises problem formulation, design of experiments, numerical simulations, surrogate model construction and constrained optimisation. This study presents an example for the Faro-Olhão Inlet in the Ria Formosa (Portugal), a potential site for…
- Journal Article:
del Horno et al.
The use of ballast systems to carry out automatic emersion/immersion maneuvers for first generation tidal energy converters (TECs) has aroused the interest of researchers and technicians as new technique by which lower installation and operation and maintenance (O&M) costs (a reduction of the installation costs by 10% and O&M by 15%). Very simple dynamic models have been obtained and…
- Conference Paper:
Skelton et al.
This paper outlines the learning process undertaken during development of the Oyster® technology by Aquamarine Power, a leader in the wave energy industry. The first generation prototype of the Oyster Wave Energy Converter has operated for more than 6000 hours offshore, enabling significant improvements in the forecast power capture and efficiency of the second-generation device. The…
- Report:
Nava et al.
This document, D5.1 Technical Requirements for the Deployment Design Tools, is a deliverable of the DTOceanPlus project, which is funded by the European Union’s H2020 Programme under Grant Agreement №785921.
The overarching objective of the DTOceanPlus project is to develop and demonstrate an open source, integrated suite of 2nd generation design tools for ocean energy technologies that…
- Presentation:
Edwards and Mekhiche
- Describe deployment of an Autonomous PowerBuoy® (APB) off the coast of New Jersey
- Summarize APB ocean performance
- Overall ocean operation
- Electric power output
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