Investigating the impact of power-take-off system parameters and control law on a rotational wave energy converter's peak-to-average power ratio reduction

H. Bora Karayaka*, Yi Hsiang Yu, Nathan Tom, Eduard Muljadi

*此作品的通信作者

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

Due to the irregular nature of real waves, the power captured in a wave energy converter (WEC) system is highly variable. This is an important barrier to the effective use of WECs. To address this challenge, this study focuses on a rotational WEC power-take-off system in which high-speed and high-efficiency generators along with a torque/power smoothing inertia element can be effectively utilized. In the first phase of this study, the U.S. Department of Energy's reference model 3 (WEC-Sim RM3; two-body point absorber), along with a slider-crank WEC, were integrated for linear to rotational conversion. Relative motion between the float and spar in RM3 was the driving force for this slider-crank WEC, which is connected to a motor/generator set through a gearbox. RM3 geometry was scaled down by 25 times to work within the limits of the physical motor/generator set used in the experimentation. Once the integration in a hardware-in-the-loop simulation environment was successfully completed, data on the peak-toaverage power ratio was collected for various wave conditions including regular and irregular waves. The control algorithm designed to keep the system in resonance with waves was able to maintain relatively high speed depending on the specific gear ratio and wave period. Initial results with hardware-in-theloop simulations reveal that gear ratio and crank radius have a strong impact on the peak-to-average power ratio. In addition, it was found that output power from the generator was maximized at a larger gear ratio, as the crank radius was increased.

原文English
主出版物標題Ocean Renewable Energy
發行者American Society of Mechanical Engineers (ASME)
ISBN(電子)9780791884416
DOIs
出版狀態E-pub ahead of print - 12月 2020
事件ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020 - Virtual, Online
持續時間: 3 8月 20207 8月 2020

出版系列

名字Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
9

Conference

ConferenceASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020
城市Virtual, Online
期間3/08/207/08/20

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