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FOSWEC v2: System identification and control testing at Hinsdale Wave Research Laboratory
This report summarizes the design and execution of a wave tank test of the floating oscillating surge wave energy converter (FOSWEC) in the O.H. Hinsdale Wave Research Laboratory Directional Wave Basin at Oregon State University. This device, which uses two "flaps" that pivot about a central platform when excited by waves, has a natural frequency within the range of the waves by which it is excited. The FOSWEC was originally considered to be a 1:33 scale device, however, for the current tests, no fixed relative scale is used (i.e., the WEC is considered to be scaled for the basin?s wave environment in which it operates). The primary goal of this test was to assess the degree to which previously developed modeling, experimentation, and control design methods could be applied to a broad range of wave energy converter designs. Testing was conducted to identify a dynamic model for the impedance and excitation behavior of the device. Using these models, a series of closed loop tests were conducted using a causal impedance matching controller. This report provides a brief description of the results, as well as a summary of the device and experimental design. The results show that the methods applied to this experimental device perform well and should be broadly applicable. The data collected during testing is compressed into FOSWEC.zip. Please refer to Appendix C (pages 61-63) of the test report for descriptions of each test ID corresponding to the compressed files.
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WEC Controls Optimization Final Report
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The over-arching project objective is to fully develop and validate optimal controls frameworks that can subsequently be applied widely to different WEC devices and concepts. Optimal controls of WEC devices represent a fundamental building block for WEC designers that must be considered as an integral part of every stage of device development. Using a building-blocks approach to optimal controls development, this effort will result in the full development of a feed-forward and feed-back control approach and a wave prediction system. Phase I focused primarily on numerical offline optimization and validation using wave tank testing of three industry partners? WEC devices, including CalWave, Ocean Energy, and Resolute Marine Energy. These industry partnerships allowed us to identify optimal control strategies for these different WEC topologies at different maturity levels. Phase II focused on demonstrating an integrated control system on a custom-built prototype for at-sea testing. A secondary focus during phase II is to adapt our systems identification, controls and wave-prediction frameworks to become more robust and comprehensive in respect to capability, robustness, and reliability. RE Vision Consulting leads this project and has compiled the final public domain report included in this submission.
State Estimation for advanced control of wave energy converters
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A report on state estimation for advanced control of wave energy converters (WECs), with supporting data models and slides from the overview presentation. The methods discussed are intended for use to enable real-time closed loop control of WECs.
TEAMER: OSU X Hinsdale & Sandia - LUPA System Identification
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This submission is part of a TEAMER testing campaign through RFTS 7 at the O.H. Hinsdale Wave Research Laboratory in Corvallis, Oregon. This testing was conducted by Oregon State University (OSU) and Sandia National Laboratories in October and November 2023. The Laboratory Upgrade Point Absorber (LUPA) WEC was used for experimental testing in the large wave flume with a water depth of 3.695 m in the six-DOF configuration. The raw data and post processing scripts enable multi degree system identification for LUPA and generation of the figures contained in the post access report. This resource includes the raw data, processing script, post access report, and copyright information of this dataset and code. Note: This code is intended for ad-hoc analysis purposes only. Users should be aware that the functionality and performance of this code may be limited to specific scenarios and should not be relied upon for broader applications without appropriate modifications and testing. This project is part of the TEAMER RFTS 7 (request for technical support) program.
Advanced Direct-Drive Generator for Improved Availability of Oscillating Wave Surge Converter Power Generation Systems: 1hp 300rpm Axial-Flux Magnetically Geared Generator Test Data
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Static torque and no load test data for a 1hp, 300rpm axial-flux magnetically geared generator prototype developed by Texas A&M EMPE Lab.
Wave Energy Prize - 1/50th Testing - Team Flapper/Harvest Oscillating Wave Surge Converter
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This submission of data includes all the 1/50th scale testing data completed on the Wave Energy Prize for the Team Flapper/Harvest, and includes: - 1/50th test data (raw & processed) - 1/50th test data video and pictures - 1/50th Test plans and testing documents - SSTF_Submission (summarized results)
TEAMER: Mass of Water Turbine Current Energy Converter CFD Results
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The CFD (computational fluid dynamics) results for the Mass of Water Turbine (MOWT) current energy converter from MWNW Consulting (formerly Ecosse IP). Each case is self-contained in its own tar.gz archive file. The archive contains the scripts required to perform a full simulation using OpenFOAM v1906. The scripts to process the output and plot forces are included in "Plotting Scripts", and all computational meshes generated are included in "Computational Grids". Project is part of the TEAMER RFTS 2 (request for technical support) program.
EGS Collab Experiment 2: Shear Stimulation ERT Monitoring Data
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This repository contains the electrical resistivity tomography (ERT) monitoring data that was collected before, during, and after shear stimulation attempts were conducted at EGS Collab. These tests were carried out on the SURF 4100 level during Experiment 2 in March, 2022. Flow and stimulation data corresponding to this dataset are available in a different GDR dataset, which is linked below. Also included here are the E4D input files that were used to process the ERT data. E4D is an open source ERT monitoring and inversion code which is linked for use below.
Triton Point Absorber 1:30 Scale Tank Test Data for Extreme Wave Environments
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This content model summarizes laboratory testing data for the Oscilla Power Triton WEC conducted at 1:30 scale. The WEC was tested in large operational waves and in extreme wave conditions along the 1 in 50 year wave contour at the DoE reference location in Humbolt Bay, CA. The WEC was tested in both its operational configuration and its survival configuration. The aims of the dataset are (i) To demonstrate that the survival strategy developed for the Triton WEC improves survivability and reduces loads in extreme wave environments, and (ii) To determine the ultimate design loads for the WEC.
Wave Energy Prize - 1/20th Testing - RTI Wave Power Oscillating Wave Surge Converter
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Data from the 1/20th scale testing data completed on the Wave Energy Prize for the RTI Wave Power team, including the 1/20th Test Plan, raw test data, video, photos, and data analysis results. The top level objective of the 1/20th scale device testing is to obtain the necessary measurements required for determining Average Climate Capture Width per Characteristic Capital Expenditure (ACE) and the Hydrodynamic Performance Quality (HPQ), key metrics for determining the Wave Energy Prize (WEP) winners.
Wave Energy Prize - 1/50th Testing - AquaHarmonics Point Absorber
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This submission of data includes all the 1/50th scale testing data completed on the Wave Energy Prize for the AquaHarmonics team, and includes: - 1/50th test data (raw & processed) - 1/50th test data video and pictures - 1/50th Test plans and testing documents - SSTF_Submission (summarized results)