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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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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
1 Resources
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TEAMER: Original HANNA Mono-Radial Turbine Post Access Report

Final report on a TEAMER RFTS 2 (request for technical support) study undertaken by Alden Research Laboratory for the Mono-radial turbine invented by John Clark Hanna DBA: Hanna Wave Energy Primary Drives. The study is a predictive numerical and CFD (computational fluid dynamics) ...

Hanna, J. Hanna Wave Energy Primary Drives

Mar 10, 2022
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CalWave Device Behavior in Different Sea States from Scaled Tank Testing

This submission contains a summary of tank test derived WEC device behavior in different irregular sea states. CalWave sought to conduct experimental tank testing of scaled prototype units early on in the design process to obtain a first estimation of device performance for sea ...

Boerner, T. and Murray, B. CalWave Power Technologies Inc.

Mar 30, 2018
1 Resources
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Model and experimental validation of ocean kite dynamics and controls

This submission includes two peer-reviewed papers from researchers at North Carolina State University presenting the modeling and lab-scale experimentation of the dynamics and control of a tethered tidal ocean kite. Below are the abstracts of each file included in the submission. ...

Vermillion, C. et al North Carolina State University

Mar 01, 2020
2 Resources
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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
0 Stars
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Turbine Depth Optimization Study, Admiralty Inlet, WA

The zipped file contains a directory of data and routines used in the NNMREC turbine depth optimization study (Kawase et al., 2011), and calculation results thereof. For further info, please contact Mitsuhiro Kawase at kawase@uw.edu.

Kawase, M. et al University of Washington

Nov 22, 2009
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
0 Stars
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Performance data for an axial-flow turbine with passive adaptive blades

To support the development of simulation tools for passive adaptive turbine rotors, an experimental data set from a laboratory-scale axial-flow turbine with passive adaptive blades is provided. The 0.45-meter diameter turbine was tested in the Alice C. Tyler Flume at the Universit...

Van Ness, K. et al University of Washington

May 01, 2024
1 Resources
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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
1 Resources
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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
1 Resources
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Tanana River Transects September 2010

As part of the initial site investigation for the Tanana River near Nenana, Alaska, a set of transects was completed on September 23rd, 2010. Similar to the one done on August 10th, 2010. This data was collected with a Rio Grande 1200 Teledyne ADCP the same year the initial bathym...

DUVOY, P. University of Alaska Fairbanks

Sep 23, 2010
2 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
1 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
0 Stars
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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
1 Resources
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Simulink Model of a New Energy EVG-005 5kW Hydropower Turbine

Simulink model for a New Energy 5kW hydropower turbine. ADCP data ("ds_streamwise_7_13.nc") and DC voltage, DC current, and rotor rotation observed from the New Energy EVG-005 Current Energy Converter (CEC) ("electrical_7_13_10ohms.nc") were collected at the Tanana River Test Sit...

Browning, E. et al University of Alaska Fairbanks

Jul 13, 2023
2 Resources
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CalWave WEC Open Water Demonstration Public Final Test Report

The objective of this project is to advance the Technology Readiness Level of the x1 Wave Energy Converter (WEC) developed by CalWave Power Technologies Inc. through advanced numerical simulations, dynamic hardware tests, and ultimately a scaled open water demonstration deployment...

Boerner, T. et al CalWave Power Technologies Inc.

Nov 30, 2022
2 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
1 Resources
0 Stars
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TEAMER: 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
2 Resources
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Accelerated Lifetime Testing of Main Shaft Seals for Tidal Turbine Rotors

The lifetime assessment experimental platform described in this report is specifically designed for testing the low-speed main shaft seal for Verdant Power's (Verdant Power Inc., New York, New York) fifth-generation (Gen5) underwater power generation turbine. This project is joint...

Murray, R. et al National Renewable Energy Laboratory

Jul 01, 2024
1 Resources
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TEAMER: Numerical Modeling and Optimization of the iProTech Pitching Inertial Pump (PIP) Wave Energy Converter (WEC)

This project focused on developing an automated workflow to evaluate and optimize the iProTech Pitching Inertial Pump (PIP) wave energy converter (WEC) using open-source Python packages and the MATLAB/Simulink tool, WEC-Sim. The process involved parameterizing key design variables...

Wynn, N. et al National Renewable Energy Laboratory

Apr 11, 2024
1 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
1 Resources
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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
2 Resources
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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