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Title: On the Natural Frequency of Tidal Current Power Systems - A Discussion of Sea Testing

Abstract

In order to study its wet natural frequency (in water) and dry frequency (in air), we conducted a two-year measurement campaign by deploying a full-scale prototype tidal current turbine system. A theoretical model is validated, and reveals the measured wet natural frequency of the device could be 54.6% of the dry frequency. Among short-term physics, inflow turbulence is important in the excitation of system resonances that can lead to fatigue damage and system failure. Among long-term physics, the wet natural frequency is highly dependent on tidal constituents, the semi-diurnal tides (M2 and S2) and diurnal tides (K1 and O1).

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1171291
Report Number(s):
PNNL-SA-100413
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters, 105(2):Article No. 023902
Country of Publication:
United States
Language:
English

Citation Formats

Li, Ye, Yi, Jin-Hak, Song, Huimin, Wang, Qi, Yang, Zhaoqing, Kelley, Neil D., and Lee, Kwang-Soo. On the Natural Frequency of Tidal Current Power Systems - A Discussion of Sea Testing. United States: N. p., 2014. Web. doi:10.1063/1.4886797.
Li, Ye, Yi, Jin-Hak, Song, Huimin, Wang, Qi, Yang, Zhaoqing, Kelley, Neil D., & Lee, Kwang-Soo. On the Natural Frequency of Tidal Current Power Systems - A Discussion of Sea Testing. United States. doi:10.1063/1.4886797.
Li, Ye, Yi, Jin-Hak, Song, Huimin, Wang, Qi, Yang, Zhaoqing, Kelley, Neil D., and Lee, Kwang-Soo. Mon . "On the Natural Frequency of Tidal Current Power Systems - A Discussion of Sea Testing". United States. doi:10.1063/1.4886797.
@article{osti_1171291,
title = {On the Natural Frequency of Tidal Current Power Systems - A Discussion of Sea Testing},
author = {Li, Ye and Yi, Jin-Hak and Song, Huimin and Wang, Qi and Yang, Zhaoqing and Kelley, Neil D. and Lee, Kwang-Soo},
abstractNote = {In order to study its wet natural frequency (in water) and dry frequency (in air), we conducted a two-year measurement campaign by deploying a full-scale prototype tidal current turbine system. A theoretical model is validated, and reveals the measured wet natural frequency of the device could be 54.6% of the dry frequency. Among short-term physics, inflow turbulence is important in the excitation of system resonances that can lead to fatigue damage and system failure. Among long-term physics, the wet natural frequency is highly dependent on tidal constituents, the semi-diurnal tides (M2 and S2) and diurnal tides (K1 and O1).},
doi = {10.1063/1.4886797},
journal = {Applied Physics Letters, 105(2):Article No. 023902},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 14 00:00:00 EDT 2014},
month = {Mon Jul 14 00:00:00 EDT 2014}
}