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TriFrame Mount Structural Performance Period A

Long-Term TriFrame Monitoring System (LTTFMS) data collected during Period A (13 days 10/22/20 11/4/20). The central component of the Verdant Power Free Flow System is a three-bladed horizontal-axis turbine. The turbine is equipped with a composite rotor with three fixed-pitch bl...

Colby, J. et al Verdant Power Inc.

Nov 12, 2021
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Centipod WEC, Advanced Controls, Quarterly Technical Report

Quarterly Technical Report for "Advanced Controls for the Multi-pod Centipod WEC device" describing project parameters, organization, task activities, accomplishments, and conclusions. See other submissions under this DOE project for economic viability, design geometry, and modeli...

McCall, A. Dehlsen Associates, LLC

Feb 15, 2016
2 Resources
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Geometric, structural, and control co-design for undersea kites

Focusing on a marine hydrokinetic energy application, this paper presents a combined geometric, structural, and control co-design framework for optimizing the performance of energy-harvesting kites subject to structural constraints. While energy-harvesting kites can offer more tha...

Vermillion, C. et al North Carolina State University

Sep 14, 2020
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LCOE Baseline for OE Buoy WEC Device

Capex numbers are in $/kW, Opex numbers in $/kW-yr. Cost Estimates provided herein are based on concept design and basic engineering data and have high levels of uncertainties embedded. This reference economic scenario was done for a very large device version of the Ocean Energy ...

Previsic, M. et al Re Vision Consulting

Jul 26, 2017
2 Resources
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Northwest National Marine Renewable Energy Center, OR Final Technical Report & Appendices

In 2008, the US Department of Energy (DOE) Wind and Water Power Program issued a funding opportunity announcement to establish university-led National Marine Renewable Energy Centers. Oregon State University and the University of Washington combined their capabilities in wave and ...

Hellin, D. Northwest National Marine Renewable Energy Center

Jun 30, 2016
2 Resources
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Centipod WEC, Advanced Controls, MPC Controller MATLAB Code

This archive contains the MATLAB code for the model predictive control (MPC) controller developed in this project. The archive containing the WaveDyn models used for analysis of the Centipod with the MPC controller is linked in this submission.

McCall, A. Dehlsen Associates, LLC

Feb 15, 2016
3 Resources
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AeroDyn V15.04: Design Tool for Wind and MHK Turbines

AeroDyn is a time-domain wind and MHK turbine aerodynamics module that can be coupled into the FAST version 8 multi-physics engineering tool to enable aero-elastic simulation of horizontal-axis wind turbines. AeroDyn V15.04 has been updated to include a cavitation check for MHK tu...

Murray, R. et al National Renewable Energy Laboratory

Apr 28, 2017
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M3 Wave DMP/APEX WEC Survival Test Report

This survival test report for the Delos-Reyes Morrow Pressure Device (DMP), commercialized by M3 Wave LLC as "APEX," summarizes the key tank test data, numerical model results, input test conditions (both numerical and tank testing), and crosses these items with three designs of t...

Morrow, M. and Delos-Reyes, M. M3 Wave

Aug 31, 2017
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Observation-Based Resource Assessment of Gulf Stream MHK

Multi-year measurements of current velocity, salinity, and temperature from fixed and vessel-mounted sensors quantify Gulf Stream (GS) MHK resource variability and inform development off Cape Hatteras, NC. Vessel transects across the GS demonstrate a jet-like velocity structure wi...

Muglia, M. et al North Carolina State University

Jan 01, 2020
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Competing Use Analysis for Offshore Renewables and Subsea Cables

Demand for abundant and diverse resources in the oceans is growing, necessitating marine spatial planning. To inform development of Marine Hydrokinetic (MHK) and Offshore Wind (OSW) resources, the Department of Energy (DOE) has asked NREL to identify the competing uses areas betwe...

Best, B. and Kilcher, L. National Renewable Energy Laboratory

Aug 29, 2019
3 Resources
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MHKDR Data Management and Best Practices for Submitters and Curators

Resources for MHKDR data submitters and curators, including training videos, step-by-step guides on data submission, and detailed documentation of the MHKDR. The Data Management and Submission Best Practices document also contains API access and metadata schema information for dev...

Weers, J. et al National Renewable Energy Laboratory

Dec 15, 2021
3 Resources
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CalWave Open Water Demonstration PTO Belt Assessment & Test Report Public

PTO (Power Take-Off) belt test and analysis report conducted under CalWave's Open Water Demonstration Award EE0008097 Belt Tradeoffs for Winch PTO. The report tests two types of belts: a high modulus polyethylene (HMPE) woven fiber belt and a steel cable polyurethane belt. The goa...

Kojimoto, N. and Boerner, T. CalWave Power Technologies Inc.

May 28, 2021
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Control of an AUV with deployable energy-harvesting kite

This paper examines the control of an autonomous underwater vehicle (AUV) with a deployable energy-harvesting kite for oceanographic observation and surveillance. The proposed design and control strategies specifically address objectives of achieving high-payload, long-endurance A...

Reed, J. et al North Carolina State University

Sep 02, 2019
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Advanced TidGen Power System Preliminary IO&M and Testing Plan

The TidGen Power System generates emission-free electricity from tidal currents and connects directly into existing grids using smart grid technology. The power system consists of three major subsystems: shore-side power electronics, mooring system, and turbine generator unit (TGU...

Marnagh, C. and McEntee, J. Ocean Renewable Power Company

Jun 14, 2018
1 Resources
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Electrically Engaged Undulation (EEL) System

The Electrically Engaged UnduLation (EEL) system is a buoyancy-driven submersible device for powering oceanographic instruments. Physically, EEL is a slender body whose flexible spine is made up of energy units interconnected by uniaxial hinges. Each unit consists of a pair of pie...

Lu, K. Pyro-E

Dec 01, 2021
1 Resources
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WEC Controls Optimization Final Report

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 cons...

Previsic, M. and Karthikeyan, A. Re Vision Consulting

Aug 26, 2020
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StingRAY Structural Optimization Final Technical Report

The overall project objective is to materially decrease the leveled cost of energy (LCOE) of the Columbia Power (CPower) StingRAY utility-scale wave energy converter (WEC). This will be achieved by reducing structural material and manufacturing costs and increasing energy output. ...

Lenee-Bluhm, P. Columbia Power Technologies, Inc.

Aug 05, 2020
2 Resources
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M3 Wave DMP/APEX WEC Final Technical Report

This project successfully developed methods for numerical modeling of sediment transport phenomena around rigid objects resting on or near the ocean floor. These techniques were validated with physical testing using actual sediment in a large wave tank. These methods can be applie...

Morrow, M. et al M3 Wave

May 31, 2018
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Advanced TidGen Power System Composites Structural Testing

Seawater aging response was investigated in marine-grade glass/epoxy, glass/vinyl ester, carbon/epoxy and carbon/vinyl ester composites with respect to water uptake, interlaminar shear strength, flexural strength, tensile strength, and tensile fracture surface observations. The re...

Krumpe, A. ORPC Inc.

Jan 06, 2020
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Lift Equivalence and Cancellation for Airfoil Surge-Pitch-Plunge Oscillations

A NACA 0018 airfoil in freestream velocity is oscillated in longitudinal, transverse, and angle-of-attack directions with respect to the freestream velocity, known as surge, plunge, and pitch. The lift-based equivalence method introduces phase shifts between these three motions to...

Elfering, K. and Granlund, K. North Carolina State University