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CalWave First Iterative PTO Description

This documents summarizes a preliminary first iterative design of a PTO device developed by CalWave. The document includes controls, hydraulic, and electric architectures from the first iteration of the CalWave PTO design that match requirements set out by the "CalWave Holistic PT...
Kojimoto, N. et al CalWave Power Technologies Inc.
Dec 06, 2021
2 Resources
0 Stars
Awaiting release

CalWave WEC Holistic PTO Design

This project aims to advance the Technology Readiness Level (TRL) of CalWave’s commercial scale Power Take-Off (PTO) subsystem through further increasing the level of coupling in physical PTO and concurrent controls design. This is achieved by incorporating a systematic holistic...
Boerner, T. et al CalWave Power Technologies Inc.
Sep 02, 2022
5 Resources
0 Stars
Awaiting release

Holistic Control Embedded PTO Development Target Performance Metrics Definitions

Collection of Power Take-Off (PTO), Power Conversion Chain (PCC), and relevant device metrics to be used for performance assessment of the Control co-designed PTO including brief summary of literature, baseline, and target metrics values.
Boerner, T. et al CalWave Power Technologies Inc.
Jul 30, 2019
1 Resources
0 Stars
Awaiting release

CalWave Holistic PTO Design Product Requirement Document

CalWave Power Technologies is currently in the process of developing the conceptual architecture for a fully upscaled Wave Energy Converter. Current and past efforts have been for smaller scaled systems, with commensurately lower forces and length scales. This document contains a ...
Kojimoto, N. et al CalWave Power Technologies Inc.
Dec 06, 2021
1 Resources
0 Stars
Awaiting release

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
0 Stars
Publicly accessible

HydroAir Power Take Off Combined Design Report

The submission is the combined design report for the HydroAir Power Take Off (PTO). CAD drawings, circuit diagrams, design report, test plan, technical specifications and data sheets are included for the Main and auxiliary control cabinets and three-phase-synchronous-motor with a ...
Pearson, G. et al Dresser-Rand Company
Jun 26, 2015
15 Resources
0 Stars
Publicly accessible

Laboratory Experiments for Highly Nonlinear WEC-Wave Conditions

This document describes the experiments carried out in December 2019 and February-March 2020 in the Directional Wave Basin at the O.H. Hinsdale Wave Research Laboratory, Oregon State University. Regular and irregular waves were generated in the absence and presence of a WEC, inclu...
Robertson, B. et al Oregon State University
Apr 30, 2020
1 Resources
0 Stars
Awaiting release

TEAMER: Sandia and CalWave Torque Spring Assessment

Power-take-off (PTO) systems for wave energy converters (WEC) require restoring forces for efficient hydrodynamic as well as mechanical to electric power transfer. Implementation of an effective spring mechanism that can provide a restoring torque on e.g. a rotational, winch type ...
Boerner, T. et al CalWave Power Technologies Inc.
Apr 01, 2022
3 Resources
0 Stars
Curated

Design Specifications for Manufacturer for the HydroAir Power Take Off System

Includes Design Specs for Manufacturer, PTO Weight, PTO Dimensions, Turbine (Rotor and Ductwork) Design, CAD Drawings of the turbine and rotor, List of components and weights, Materials Used, Generator, List of components and weights, Structural Design, CAD drawings of the structu...
Natanzi, S. and Hall, R. Siemens Government Technologies, Inc.
Oct 02, 2020
1 Resources
0 Stars
Awaiting release

Translated System Requirements into PTO Design Requirements (in addition to Component-level metrics) for the HydroAir Power Take Off System

Includes Maximum Cost, Critical Dimensions and Weights, Damping Curve, Rotor Speed Profile Changes, Mechanical Power for a given pressure and airflow, Turbine rpm range and power, Generator input torque, Torque speed curves/profile, Generated electrical power for given input torqu...
Natanzi, S. and Hall, R. Siemens Government Technologies, Inc.
Oct 02, 2020
1 Resources
0 Stars
Awaiting release

LandRAY PTO Testing Utilizing the NREL NWTC 5MW Dynamometer

The overarching project objective is to demonstrate the feasibility of using an innovative PowerTake-Off (PTO) Module in Columbia Power's utility-scale wave energy converter (WEC). The PTO Module uniquely combines a large-diameter, direct-drive, rotary permanent magnet generator; ...
Lenee-Bluhm, P. and Rhinefrank, K. Columbia Power Technologies, Inc.
Jun 13, 2016
3 Resources
0 Stars
Publicly accessible

LandRAY PTO Test Plans with NREL NWTC 5 MW Dynamometer

The overarching project objective is to demonstrate the feasibility of using an innovative PowerTake-Off (PTO) Module in Columbia Power's utility-scale wave energy converter (WEC). The PTO Module uniquely combines a large-diameter, direct-drive, rotary permanent magnet generator; ...
Prudell, J. et al Columbia Power Technologies, Inc.
Feb 29, 2016
5 Resources
0 Stars
Publicly accessible

Direct-Drive Electrical Generator and PTO System for Flap-type Wave Energy Converters

Project and generator specifications and initial prototype test data for flap-type wave energy converters (WEC)
Englebretson, S. ABB Inc.
Mar 20, 2015
2 Resources
0 Stars
Publicly accessible

TEAMER: Additional Degree of Freedom for WEC Model

'Additional Degree of Freedom for WEC' WEC-Sim numerical model from RFTS 1 (request for technical support) TEAMER project. An increase in wave energy converter (WEC) efficiency requires not only consideration of the nonlinear effects in the WEC dynamics and the power take-off (PTO...
McCall, A. et al Dehlsen Associates, LLC
May 26, 2022
2 Resources
0 Stars
Curated

CalWave Open Water Demo Budget Period 1 Reports

The objective of the project is to advance the Technology Readiness Level (TRL) of the Wave Energy Converter (WEC) developed by CalWave Wave Power Technologies Inc (CalWave) through advanced numerical simulations, dynamic hardware tests, and ultimately a scaled open water demonstr...
Boerner, T. et al CalWave Power Technologies Inc.
Jun 03, 2019
8 Resources
0 Stars
Awaiting release

CalWave Tank Testing Lir Deep Ocean Basin

Experimental tank testing report for CalWave's 1:20 & 1:30 scale prototype testing at the Lir National Ocean Test Facility in Ireland. Testing was completed in January 2018. Test report includes description of the scaled prototype, primary testing objectives, instrumentation and b...
Boerner, T. CalWave Power Technologies Inc.
Jan 15, 2018
1 Resources
0 Stars
Publicly accessible

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
0 Stars
Publicly accessible

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
1 Resources
0 Stars
Publicly accessible

TEAMER: xWave Real Time IMU Optimization for Advanced Controls

CalWave is developing a wave energy converter (WEC) called xWave that operates fully submerged and is classified as a type of submerged pressure differential WEC. As ocean waves pass over the submerged wave buoy, a pressure differential is created, exciting the absorber in multipl...
Spinneken, J. and Boerner, T. CalWave Power Technologies Inc.
Apr 18, 2023
2 Resources
0 Stars
Curated

ALFA Non-linear Ocean Waves and PTO Control Strategy

Data from Advanced Laboratory and Field Arrays (ALFA) Non-linear Ocean Waves and Power Take-Off (PTO). Control Strategy project conducted at the O.H. Hinsdale Wave Research Laboratory (HWRL) at Oregon State University in 2019/2020. Contains two zip files (ALFANL.zip, ALFANL2.zip)...
Bosma, B. et al Pacific Marine Energy Center (PMEC)
Oct 28, 2019
9 Resources
0 Stars
Publicly accessible

Wave Carpet Controls Design Optimization

To assess CalWave's submerged Wave Carpet Technology for system performance advancement, CalWave seeks to test advanced controls methodologies on a simplified wave carpet model, which potentially can be used in further research to leverage the design to a full wave carpet assessme...
Previsic, M. and Karthikeyan, A. Re Vision Consulting
Aug 26, 2020
1 Resources
0 Stars
Awaiting release

Advanced Control Systems for Wave Energy Converters

This submission contains several papers, a final report, descriptions of a theoretical framework for two types of control systems, and descriptions of eight real-time flap load control policies with the objective of assessing the potential improvement of annual average capture eff...
Scruggs, J. et al Resolute Marine Energy, Inc.
Jan 30, 2017
4 Resources
0 Stars
Publicly accessible

TEAMER: CalWave xWave New Technology Qualification and Path to Certification Final Report

CalWave is developing a wave energy converter (WEC) called xWave, which operates fully submerged and is classified as a submerged pressure differential type. As ocean waves pass over the submerged wave buoy, a pressure differential is created, exciting the absorber in multiple deg...
Petcovic, D. and Zhang, S. CalWave Power Technologies Inc.
Oct 31, 2022
2 Resources
0 Stars
Curated

TEAMER: Performance mapping of Re Vision's Persistance PTO

Contains datasets from experimental measurements that were used to validate Re Vision's Persistence PTO's efficiency and performance. These measurements were obtained using a dynamometer test bench setup. The data includes open-circuit voltage and loss measurements to validate mac...
Labuschagne, H. et al National Renewable Energy Laboratory
Jul 09, 2024
4 Resources
0 Stars
Curated

Advanced WEC Dynamics and Controls, Test 1

Numerous studies have shown that advanced control of a wave energy converter's (WEC's) power take off (PTO) can provide significant increases (on the order of 200-300%) in WEC energy absorption. Transitioning these control approaches from simplified paper studies to application in...
Coe, R. Sandia National Laboratories
Feb 26, 2016
3 Resources
0 Stars
Publicly accessible
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