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1 May 2018 Integration Analysis and Evaluation of New Hybrid 3kW Ocean Wave Energy Extraction System
Jeongsoo Kim, Min Su Park, Youn Ju Jeong
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Kim, J.; Park, M.S., and Jeong, Y.J., 2018. Integration analysis and evaluation of new hybid 3kW ocean wave energy extraction system. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1316–1320. Coconut Creek (Florida), ISSN 0749-0208.

This study introduces a new hybrid wave energy extraction system and evaluates its technical feasibility by using experimental and numerical approaches. Although there are several type of wave energy extraction devices, such as an attenuator and an overtopping device, these have difficulties related to damages and variability due to water. The proposed system is designed to overcome the shortcoming of the previous system and to provide higher power efficiency; the proposed system is composed of a floating shield cylinder surrounding a generator, pendulum plates to accelerate rotation of generator and generate electricity itself, and a support column with self-positioning devices to fix the entire power generation system to the seabed and to enhance its power generation efficiency. To examine the performance characteristics of the system, mechanical and hydrodynamic interactions among the cylinder, the plates, and the support column was investigated numerically. Furthermore, for the hybrid system, an application of sequentially hydrodynamic-mechanical analysis techniques, in which the distribution and the magnitude of the predicted water pressure were then mapped into the finite element model of the extraction system, were reviewed. The interaction behaviors of the extraction system which includes large motions are also analyzed.

©Coastal Education and Research Foundation, Inc. 2018
Jeongsoo Kim, Min Su Park, and Youn Ju Jeong "Integration Analysis and Evaluation of New Hybrid 3kW Ocean Wave Energy Extraction System," Journal of Coastal Research 85(sp1), 1316-1320, (1 May 2018).
Received: 30 November 2017; Accepted: 10 February 2018; Published: 1 May 2018
frequency domain boundary element method
hydrodynamic interaction analysis
Renewable energy
sequential hydrodynamic-mechanical analysis
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