• Energy Research

Each of the three breakout groups received instructions concerning their objectives along with tools to use. Breakout Group Session 1: Baseline Studies Breakout Group Session 2: Impact/Short Scale Studies Breakout Group Session 3: Monitoring/Cumulative/Long-Term Studies

In this thesis, a Matlab/Simulink®-based simulation tool for marine current turbines has been proposed. A multiphysics approach has been adopted to model the whole system, including the resource, the rotor, the gearbox, and the generator. The developed tool can evaluate a marine current turbine performances and dynamic loads over different operating conditions. Moreover, it should be used to quantify the potential for generating electricity from various sites and therefore evaluate their cost-effectiveness. Currently, the marine current turbine simulator incorporates all types of horizontal-axis turbines. Moreover, it includes two different electrical topologies, one based on the doubly-fed induction generator and the other on the permanent magnet synchronous one. For these two technologies, two types of speed control strategies have been proposed. The first one suggests the use of well-known PI controllers. While, the second one proposes a nonlinear control approach based on the so-called high-order sliding mode that should handle torque oscillation smoothing and robustness against resource turbulences and electric grid disturbances. The various components of the simulator have been tested and experimentally proven in terms of models and speed control performances. The obtained results were consistent and very promising. ; Les travaux développés durant cette thèse, ont permis la mise au point d'un simulateur qui permet de prévoir le comportement d'une hydrolienne dans son environnement. A cet effet, une approche multiphysique a été adoptée pour la modélisation de l'ensemble de la chaîne de conversion d'énergie. L'environnement de simulation ainsi développé peut également être utilisé pour le dimensionnement et l'évaluation de la rentabilité d'installations hydroliennes. A l'heure actuelle, l'outil développé permet de simuler tous les types de turbines à axe horizontal. De plus, il permet de choisir entre deux topologies électriques différentes ; une basée sur la génératrice asynchrone à double alimentation et ...

The objective of this study is to identify potential end-users of the test center and their needs. The findings will inform the infrastructure design and the services offered for the PMEC South Energy Test Site.

Oregon Wave Energy Trust (OWET) is a nonprofit public-private partnership funded by the Oregon Innovation Council. Its mission is to support the responsible development of wave energy in Oregon. OWET emphasizes an inclusive, collaborative model to ensure that Oregon maintains its competitive advantage and maximizes the economic development potential of this emerging industry. Our work includes stakeholder outreach and education, policy development, environmental assessment, applied research and market development.

Oregon Wave Energy Trust (OWET) is a nonprofit public-private partnership funded by the Oregon Innovation Council. Its mission is to support the responsible development of wave energy in Oregon. OWET emphasizes an inclusive, collaborative model to ensure that Oregon maintains its competitive advantage and maximizes the economic development potential of this emerging industry. Our work includes stakeholder outreach and education, policy development, environmental assessment, applied research and market development.

Measurement of velocity and turbulence at a point underwater through the use of converging acoustic doppler beams. Developed under work package 7 of the Selkie project, the C-ADP is a scientific instrument comprising of a lightweight triangular-shaped frame, 10m from corner to corner, with single-beam ADP units at each corner aimed at a focus point above the device and an automated air lift recovery system. Further background information is available at https://www.selkie-project.eu/selkie-tools-converging-adcp-tool-for-tidal-stream-energy-sites/ The Swansea University Self Recovery Instrument Frame (SUSRIF) can easily be modified to carry different instruments that require fixed distances from each other. The information published as part of this release includes engineering drawings and documentation detailing the design and operation of the device. This work was supported by the SELKIE project funded by the European Regional Development Fund through the Ireland Wales Cooperation programme.

This dataset, collected as part of the NETTUNO research project, includes measurements from wind tunnel tests on a 1:75 scale model wind turbine. The primary focus of the experiment was to analyze how platform motion in different directions affects the aerodynamics of the wind turbine rotor and the development of its wake. The dataset consists of two components:• Measurements of the aerodynamic forces and moments experienced by the rotor under various platform motion conditions.• Wind speed measurements collected at multiple downstream distances from the rotor, capturing the velocity profiles and turbulence characteristics within the turbine's wake.The dataset is designed to serve as a comprehensive benchmark for researchers and engineers working on floating wind turbine aerodynamics, offering valuable insights for optimizing wind farm layouts and for developing simulation tools.

Research in marine current energy, including tidal and ocean currents, has undergone significant growth in the past decade. The horizontal-axis marine current turbine is one of the machines used to harness marine current energy, which appears to be the most technologically and economically viable one at this stage. A number of large-scale marine current turbines rated at more than 1 MW have been deployed around the World. Parallel to the development of industry, academic research on horizontal-axis marine current turbines has also shown positive growth. This paper reviews previous research on horizontal-axis marine current turbines and provides a concise overview for future researchers who might be interested in horizontal-axis marine current turbines. The review covers several main aspects, such as: energy assessment, turbine design, wakes, generators, novel modifications and environmental impact. Future trends for research on horizontal-axis marine current turbines are also discussed.

Cape Terawhiti ADCP Dataset Original focus was to capture ocean currents over a spring neap cycle in eastern Cook Strait, a location of strong tidal flows. Location - Depth 34 m of water off Cape Terawhiti, Cook Strait, New Zealand. - 41o 16.689 S 174o 35.857 E Instrument - Recording Doppler Current Profiler (RDCP, serial number 0200) manufactured by AADI (Aanderaa) Norway. Setup - Upward looking - 2 m bins at 1 m intervals - 300 sec interval - 100 pings - Ping interval 740 mSec - 25% duty cycle Deployment - declination :+22 - start_time :2010/08/25 08:45:00 - stop_time :2010/10/07 13:35:00 - utc_offset :+12 Header - printf,luout,'Experiment: Cape Terawhiti ADCP Dataset 2010' - printf,luout,'Location: 41o 16.689 S 174o 35.857 E' - printf,luout,'Water Depth 34 m' - printf,luout,'Cook Strait New Zealand' - printf,luout,'collected by NZ NIWA' - printf,luout,'Craig Stevens & Craig Stewart & Brett Grant' - printf,luout,'SN=0200 RDCP AADI ADCP' - printf,luout,'Time UTC' - printf,luout,'Data are in pairs of lines (ie 2 lines for every time step)' - printf,luout,'time and velocity magnitude cm/s' - printf,luout,'time and direction is true north deg' - printf,luout,'compass corrected for declination +22o and frame effects' - printf,luout,'top line is height above bed'

In 2010 it was reported that the south west of England had an abundance of natural marine energy resources with a capacity to deliver 9.2 GW of energy, this combed with the diverse marine skills, services and facilities available in the south west supply chain, gives the south west of England a unique and significant offer to the MRE sector. This dissertation outlines the opportunities for south west companies to engage with the marine renewable energy, by defining the requirements of the sector. Potential supply chain company diversification methodology is outlined in a created model, and identification of methods of engagement with the sector was undertaken via the use of a questionnaire; with existing south west based marine renewable energy supply chain companies. The dissertation is concluded with recommendations for potential supply chain companies in the south west of England wishing to engage with the MRE sector in the following categories: diversification, initial engagement and market entry.