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Title: Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array

Abstract

Industry-specific tools for analyzing and optimizing the design of wave energy converters (WECs) and associated power systems are essential to advancing marine renewable energy. This study aims to quantify the influence of phase information on the device power output of a virtual WEC array. We run the phase-resolving wave model FUNWAVE-TVD (Total Variation Diminishing) to generate directional waves at the PacWave South site offshore from Newport, Oregon, where future WECs are expected to be installed for testing. The two broad cases presented correspond to mean wave climates during warm months (March–August) and cold months (September–February). FUNWAVE-TVD time series of sea-surface elevation are then used in WEC-Sim, a time domain numerical model, to simulate the hydrodynamic response of each device in the array and estimate their power output. For comparison, WEC-Sim is also run with wave energy spectra calculated from the FUNWAVE-TVD simulations, which do not retain phase information, and with wave spectra computed using the phase-averaged model Simulating WAves Nearshore (SWAN). The use of spectral data in WEC-Sim requires a conversion from frequency to time domain by means of random superposition of wave components, which are not necessarily consistent because of the linear assumption implicit in this method. Thus, powermore » response is characterized by multiple realizations of the wave climates.« less

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Water Power Technologies Office
OSTI Identifier:
1616693
Alternate Identifier(s):
OSTI ID: 1659961
Report Number(s):
PNNL-SA-150553; NREL/JA-5000-75983
Journal ID: ISSN 2077-1312
Grant/Contract Number:  
AC05-76RL01830; AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Marine Science and Engineering
Additional Journal Information:
Journal Volume: 8; Journal Issue: 3; Journal ID: ISSN 2077-1312
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 13 HYDRO ENERGY; wave energy converter; numerical modeling; time domain; WEC-Sim; FUNWAVE-TVD; SWAN; PacWave South; 50 EE - Wind and Water Power Program - Water (EE-4W)

Citation Formats

Ticona Rollano, Fadia M., Tran, Thanh Toan, Yu, Yi-Hsiang, Garcia Medina, Gabriel, and Yang, Zhaoqing. Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array. United States: N. p., 2020. Web. doi:10.3390/jmse8030171.
Ticona Rollano, Fadia M., Tran, Thanh Toan, Yu, Yi-Hsiang, Garcia Medina, Gabriel, & Yang, Zhaoqing. Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array. United States. doi:https://doi.org/10.3390/jmse8030171
Ticona Rollano, Fadia M., Tran, Thanh Toan, Yu, Yi-Hsiang, Garcia Medina, Gabriel, and Yang, Zhaoqing. Wed . "Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array". United States. doi:https://doi.org/10.3390/jmse8030171. https://www.osti.gov/servlets/purl/1616693.
@article{osti_1616693,
title = {Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array},
author = {Ticona Rollano, Fadia M. and Tran, Thanh Toan and Yu, Yi-Hsiang and Garcia Medina, Gabriel and Yang, Zhaoqing},
abstractNote = {Industry-specific tools for analyzing and optimizing the design of wave energy converters (WECs) and associated power systems are essential to advancing marine renewable energy. This study aims to quantify the influence of phase information on the device power output of a virtual WEC array. We run the phase-resolving wave model FUNWAVE-TVD (Total Variation Diminishing) to generate directional waves at the PacWave South site offshore from Newport, Oregon, where future WECs are expected to be installed for testing. The two broad cases presented correspond to mean wave climates during warm months (March–August) and cold months (September–February). FUNWAVE-TVD time series of sea-surface elevation are then used in WEC-Sim, a time domain numerical model, to simulate the hydrodynamic response of each device in the array and estimate their power output. For comparison, WEC-Sim is also run with wave energy spectra calculated from the FUNWAVE-TVD simulations, which do not retain phase information, and with wave spectra computed using the phase-averaged model Simulating WAves Nearshore (SWAN). The use of spectral data in WEC-Sim requires a conversion from frequency to time domain by means of random superposition of wave components, which are not necessarily consistent because of the linear assumption implicit in this method. Thus, power response is characterized by multiple realizations of the wave climates.},
doi = {10.3390/jmse8030171},
journal = {Journal of Marine Science and Engineering},
number = 3,
volume = 8,
place = {United States},
year = {2020},
month = {3}
}

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