Browse > Article
http://dx.doi.org/10.9765/KSCOE.2016.28.2.73

Development of a Moving Body Type Wave Power Generator using Wave Horizontal Motions and Hydraulic Experiment for Electric Power Production  

Hwang, Seong Su (Ocean, Research and Development Division)
Lee, Dong Soo (SEA TECH R&D Co. Ltd.)
Yang, Kyong Uk (School of Marine Technology, Chonnam National University)
Byun, Jung Hwan (School of Marine Technology, Chonnam National University)
Park, Il Heum (School of Marine Technology, Chonnam National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.28, no.2, 2016 , pp. 73-80 More about this Journal
Abstract
To reduce the mechanical energy loss and to get the high energy efficiency, an apparatus of wave power generation inducing a consistent one way rotating motion from the wave reciprocation motions was developed and the hydraulic experiments for the real electric power production were conducted and the results were discussed. In the experiments for the shape of the buoyant tank, the efficiency of the fixed 9 cm diameter type enduring the wave plate weight was 14.6% and this was the best result for all shapes. But although the free sliding type was expected to represent a high efficiency, the experiments did not show a good result as 8.5% efficiency. Therefore, the shape of buoyant tank was decided as the fixed 9 cm diameter type in the next all tests. In the experiments for the various incident waves, when the water depth was 90 cm, the average efficiencies were measured as 3.9% in the 2nd gear, 4.9% in the 3rd gear, 4.9% in the 4th gear, 12.0% in the 5th gear, 10.0% in the 6th gear, 3.1% in the 7th gear, and 3.0% in the 8th gear. Also, when the water depth was 80 cm, the average efficiency was shown as 15.0% with 5th gear condition. Therefore the high average efficiency as 13.5% was given with 80~90 cm water depth and the 5th gear in the model.
Keywords
wave power generator; moving body type; hydraulic experiment; wave horizontal motion; one way rotating motion;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
연도 인용수 순위
1 Cho, I.-H. and Kweon, H.-M. (2011). Extraction of Wave Energy Using the Coupled Heaving Motion of a Circular Cylinder and Linear Electric Generator. Journal of Ocean Engineering and Technology, 25(6), 9-16 (in Korean).
2 Choi, H.-S., Hong, S.-W., Kim, J.-H. and Lew, J.-M. (2004). An Experimental Study of Pneumatic Damping at the Air Chamber for an OEC-type Wave Energy Device. Journal of Ocean Engineering and Technology, 18(4), 8-14 (in Korean).
3 Dean, R.G. and Dalrymple, R.A. (1991). Water Wave Mechanics for Engineers and Scientists. Advanced Series on Ocean Engineering-Volume 2, World Scientific, USA.
4 Hong, D.C. and Hong, K. (2010). Prediction of Wave Energy Absorption Efficiency and Wave Loads of a Three-Dimensional Bottom-Mounted OWC Wave Power Device. Journal of the Korean Society for Marine Environmental Engineering, 13(1), 47-52 (in Korean).
5 Hong, S.W. and Kim, J.H. (2004). Experimenatal Study of a Compliant Mooring System for a Floating OWC Device of Offshore Catenary Moorings, Proceedings of International Society of Offshore and Polar Engineers, 1, 225-231.
6 Jo, K.-J. and Oh, J.-S. (2011). Development of Small Wave Power Controller for Ocean Facilities. Journal of the Korean Society of Marine Engineering, 35(6), 835-841 (in Korean).   DOI
7 Jung, H.S. (2011). Tidal Power and Wave Power Generation. Iljinsa Blue Books 3, Iljinsa (in Korean).
8 Kim, B.W., Shin S.-H., Hong, K., Choi, Y.S., Seo, J.O. and Ahn, I.J. (2010). Investigation on Natural Modes of Substructure of Wave Energy Converter with Overtopping Flow Device. Tracsections of the Korean Society for Noise and Vibration Engineering, 20(4), 323-330 (in Korean).   DOI
9 Kim, S.-J., Kwon, J., Kim, J.-D., Koo, W., Shin, S. and Kim, K. (2012). Experimental Study of Hydrodynamic Performance of Backward Bent Duct Buoy (BBDB) Floating Wave Energy Converter. Journal of Ocean Engineering and Technology, 26(6), 53-58 (in Korean).   DOI
10 KMI (Korea Maritime Institute) (2011). Global Competition for the Ocean Energy Development will Be Deepened. Marine Industry Trend, No.54 (in Korean).
11 Koh, H.-J., Ruy W.-S. and Cho, I.-H. (2013) Power Estimation and Optimum Design of a Buoy for the Resonant Type Wave Energy Converter Using Approximation Scheme. Journal of Ocean Engineering and Technology, 27(1), 85-92 (in Korean).   DOI
12 Kweon, H.-M., Cho, H. and Jeong, W.-M. (2013a). Wave Analysis and Spectrum Estimation for the Optimal Design of the Wave Energy Converter in the Hupo Coastal Sea. Journal of Korean Society of Coastal and Ocean Engineers, 25(3), 147-153 (in Korean).   DOI
13 Kweon, H.-M., Cho, I.-H. and Cho, H. (2013b). Heaving Displacement Amplification Characteristics of a Power Buoy in Shoaling Water with Insufficient Draft. International Journal of Naval Architecture and Ocean Engineering, 5, 614-624.   DOI
14 Kweon, H.-M., Koh, H.-J., Kim, J.-R. and Choi, Y.-H. (2013c). Experimental Study for the Resonance Effect of the Power Buoy Amplitude. Journal of the Korean Society of Civil Engineers, 33(2), 585-594 (in Korean).   DOI
15 Kyoung, J.-H., Hong, S.-Y. and Hong, D.-C. (2006). Numerical Analysis on Wave Energy Absorption of OWC-type Wave Power Generation. Journal of Ocean Engineering and Technology, 20(4), 8-14 (in Korean).
16 Lee, S.-C. and Goo, J.-S. (2013). Experimental study on Motions of VLCO for Wave Power Generation (2. Multiple Floating Bodies). Journal of Ocean Engineering and Technology, 27(6), 27-31 (in Korean).
17 Oguri, F. and Oguri, T. (2011). Handbook of Standard Machine Design Diagrams. Daekwang-seorim Press, 5th Edition, Translated by Daekwangseorim Editors (in Korean).
18 Shin, S.-H. and Hong, K. (2011). The State-of-the-art and Key Performance Indicators for Commercial Use of the Wave Energy Utilization Technologies. Journal of Korean Civil Engineers, 59(5), 55-62 (in Korean).
19 Park, J.Y., Shin, S.-H. and Hong, K. (2011). Experimental Study for Overtopping Performance and Control System of Overtopping Wave Energy Convertor. Journal of the Korean Society for Marine Environmental Engineering, 14(1), 11-18 (in Korean).   DOI
20 SEA TECH R&D Co. Ltd. (2013). Apparatus for Wave Power Generation. the Registered Patent Korea, the Application No.1020130051226, the Registration No.1012872440000 (in Korean).
21 Shin, S.-H. and Hong, K. (2013). Ocean New Reproduction Energy - Challenge the Wave Power Generation. Ocean Science Technology, 6, KIMST, 24-27 (in Korean).
22 Song, M.S., Kim, D.Y., Kim, M., Hong, K.Y. and Jun, K.C. (2004). Analysis of Wave Energy Density for Korean Coastal Sea Area Based on Long-Term Simulated Wave Data. Journal of the Korean Society for Marine Environmental Engineering, 7(3), 152-157 (in Korean).
23 Win Power Tech (2013). A Drawing of the AC generator Model WPT-200-200R-24. Drawing No.WPT-200-200H