[ Article ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 1, pp.14-19

ISSN: 2508-5107 (Online)

Print publication date 15 Feb 2018

Received 30 Nov 2017 Revised 29 Dec 2017 Accepted 09 Jan 2018

DOI: https://doi.org/10.7735/ksmte.2018.27.1.14

다수의 부유체로 구성된 파력발전장치의 설계

김옥현^a^{, *} ; 이재국^b

Design of a Wave Power Generator with Multiple Buoys

Ock Hyun Kim^a^{, *} ; Jae Kuk Lee^b

aSchool of Mechanical Engineering, College of Engineering, Chungbuk National University, 1, Chungdae-ro, Seowon-gu, Cheongju, Chungbuk-do, 28644, Korea
bGraduate School of Mechanical Engineering, College of Engineering, Chungbuk National University, 1, Chungdae-ro, Seowon-gu, Cheongju, Chungbuk-do, 28644, Korea

Correspondence to: ^*Tel.: +82-43-261-2447, Fax: +82-43-267-2447, E-mail address: ohkim@chungbuk.ac.kr (Ock Hyun Kim).

Abstract

A new type of wave power generator is proposed in this paper. It consists of a body and multiple buoys with link mechanisms. The body and buoys are designed such that the body remains stationary, while the buoys move up and down in response to the waves. The link mechanisms convert the relative motion between the body and buoys into a driving torque in one direction for the power generator. The advantage of the proposed system is that it can adopt general rotary generators and provide a better quality of the generated electric power through the cooperation of the multiple buoys, compared with a single big reciprocating buoy. Computer simulations have been done to estimate capability of electrical power generation. The maximum electric output power has been found by optimizing some design parameters and evaluated.

Keywords:

Wave power, Multi-buoys, Electric generator, Renewable energy, Ocean wave

References

Drew, B., Phummer, A. R., Sahinkaya, M. N., 2009, A Review of Wave Energy Converter Technology, Proc. IMechE, 223: A 887-902.
Lee, K. H., Park, J. H., Back, D. J., Cho, S., Kim, D. S., 2011, Discussion on Optimal Shape for Wave Power Converter Using Oscillating Water Column, J. of Korean Society of Coastal and Ocean Engineers, 23:5 345-357.
Kim, J. R., Bae, Y. H., Cho, I. H., 2014, Design of Wave Energy Extractor with a Linear Electric Generator Part I. Design of a Wave Power Buoy, J. of Korean Society for Marine Environment and Energy, 17:2 146-152.
Choi, Y. H., Lee, C. J., Hong, D. S., 2012, Dynamic Design of a Mass-Spring Type Translational Wave Energy Converter, J. of Korean Society of Manufacturing Technology Engineers, 21:1 182-189.
De O. Falcão, A. F., 2007, Modelling and Control of Oscillating-body Wave Energy Converters with Hydraulic Power Take-off and gas Accumulator, Ocean Engineering, 34:14-15 2021-2032.
Kim, S. J., Koo, W. C., Min, E. H., Jang, H., Youn, D., Lee, B., 2016, Experimental Study on Hydrodynamic Performance and Wave Power Takeoff for Heaving Wave Energy Converter, J. of Ocean Engineering and Technology, 30:5 361-366.
So, S. H., Choi, J. Y., Yu, G. J., Jung, Y. S., Choi, J. H., 2004, A Study on Performance Analysis of 3kW Grid-Connected PV Systems, J. of Korean Solar Energy Society, 24:2 9-15.
Ryu, H. J., Hong, K., Shin, S. H., Kim, S. H., Kim, Y. D., 2011, Study on Analysis of Wave Energy Sources and Wave Energy Density Map pf the Korean Sea Area, Proc. of KAOSTS, 1464-1468.