Numerical analysis on hydraulic power take-off for wave energy converter and power smoothing methods

Yi Hsiang Yu*, Nathan Tom, Dale Jenne

*此作品的通信作者

研究成果: Conference contribution同行評審

21 引文 斯高帕斯(Scopus)

摘要

One of the primary challenges for wave energy converter (WEC) systems is the fluctuating nature of wave resources, which require the WEC components to be designed to handle loads (i.e., torques, forces, and powers) that are many times greater than the average load. This approach requires a much greater power take-off (PTO) capacity than the average power output and indicates a higher cost for the PTO. Moreover, additional design requirements, such as battery storage, are needed, particularly for practical electrical grid connection, and can be a problem for sensitive equipment (e.g., radar, computing devices, and sensors). Therefore, it is essential to investigate potential methodologies to reduce the overall power fluctuation while trying to optimize the power output from WECs. In this study, a detailed hydraulic PTO model was developed and coupled with a time-domain hydrodynamics model (WEC-Sim) to evaluate the PTO efficiency for WECs and the trade-off between power output and fluctuation using different power smoothing methods, including energy storage, pressure relief mechanism, and a powerbased setpoint control method. The study also revealed that the maximum power fluctuation for WECs can be significantly reduced by one order of magnitude when these power smoothing methods are applied.

原文English
主出版物標題Ocean Renewable Energy
發行者American Society of Mechanical Engineers (ASME)
ISBN(電子)9780791851319
DOIs
出版狀態Published - 2018
事件ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018 - Madrid, Spain
持續時間: 17 6月 201822 6月 2018

出版系列

名字Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
10

Conference

ConferenceASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018
國家/地區Spain
城市Madrid
期間17/06/1822/06/18

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