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Output power characteristic of WEC for a buoy


Floating devices, such as a cavity resonance device, take advantage of both the water motion and the wave induced motions of the floating body itself. In the design of a wave energy converter (WEC), the most significant factor is that an optimum length of the internal water column should exists, that is, a length in which maximum power is converted near the heaving resonance. A theoretical analysis of this power generated by a pneumatic-type WEC is performed, and the results obtained from the analysis are used for a real WEC for a buoy. The length of the internal water column corresponds to that of the water mass in the water column. If designed properly, a WEC can take advantage not only of the cavity resonance but also of the heaving motion of the buoy. This paper presents the test results of the generation characteristic of a WEC and the harmful effect of fouling in the internal water column. The results are then applied to the design of a WEC for a buoy.

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Corresponding author

Correspondence to Jin-Seok Oh.

Additional information

This paper was recommended for publication in revised form by Associate Editor Jae Young Lee

Jin-Seok Oh was born in Kyung-Nam, Korea. He received the B. E. degree in Marine Engineering from Korea Maritime University in 1983. Since 1983, he has been with the Zodiac (England Company) including early 4 years of System Engineer. He received the M.E. and Ph. D. degrees from Korea Maritime University, Busan, Korea in 1989 and 1996, respectively. He had been with the Agency for Defense Development (ADD) as a researcher from 1989 to 1992. In 1996, he joined the Division of Mechatronics Engineering at Korea Maritime University. His research interests include electrical drive systems, robot control and PC-based Control applications.

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Oh, JS., Kwak, JH., Bae, SY. et al. Output power characteristic of WEC for a buoy. J Mech Sci Technol 23, 1571–1575 (2009).

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  • WEC
  • Resonance
  • Fouling