International Journal of Naval Architecture and Ocean Engineering

  • 제6권4호
  • /
  • Pages.813-825
  • /
  • 2014
  • /
  • 2092-6782(pISSN)
  • /
  • 2092-6790(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
권호 표지
DOI QR코드

DOI QR Code

A study of the optimum draft of multiple resonance power buoys for maximizing electric power production

  • Kweon, Hyuck-Min (Department of Railway Construction and Environmental Engineering, Gyeongju University) ;
  • Cho, Hong-Yeon (Marine Environments & Conservation Research Department, Korea Institute of Ocean Science & Technology) ;
  • Cho, II-Hyoung (Department of Ocean System Engineering, Jeju National University)
  • 발행 : 2014.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

To maximize electric power production using wave energy extractions from resonance power buoys, the maximum motion displacement spectra of the buoys can primarily be obtained under a given wave condition. In this study, wave spectra observed in shoaling water were formulated. Target resonance frequencies were established from the arithmetic means of modal frequency bands and the peak frequencies. The motion characteristics of the circular cylindrical power buoys with corresponding drafts were then calculated using numerical models without considering PTO damping force. Results showed that the heave motions of the power buoys in shoaling waters with insufficient drafts produced greater amplification effects than those in deep seas with sufficient drafts.

키워드

과제정보

연구 과제 주관 기관 : Korea Institute of Energy Technology Evaluation and Planning(KETEP)

참고문헌

  1. Bouws, E. Gunther, H. Rosenthal, W. and Vincent, C.L., 1985. Similarity of the wind wavespectrum in finite depth water 1. Spectral form. Journal of Geophysics Research, 90(C1), pp.975-986. https://doi.org/10.1029/JC090iC01p00975
  2. 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 Korean Society of Ocean Engineers, 25(6), pp.9-16.
  3. Cho, I.H., Kim, M.H. and Kweon, H.M., 2012. Wave energy converter by using relative heave motionbetween buoy and inner dynamic system. Ocean Systems Engineering, 2(4), pp.297-314. https://doi.org/10.12989/ose.2012.2.4.297
  4. Cho, I.H. and Kim, M.H., 2013. Enhancement of wave-energy-conversion efficiency of a single power buoy with inner dynamic system by intentional mismatching strategy. Ocean Systems Engineering, 3(3), pp.203-217. https://doi.org/10.12989/ose.2013.3.3.203
  5. 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), pp.85-92.
  6. Kweon, H.M., Koh, H.J., Kim, J.R. and Choi, Y.H., 2013a. Experimental study for the resonance effect of the power buoy amplitude. Journal of the Korean Society of Civil Engineers, 33(2), pp.585-594. https://doi.org/10.12652/Ksce.2013.33.2.585
  7. Kweon, H.M., Cho, H.Y. and Jeong, W.M., 2013b. 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), pp.147-153. https://doi.org/10.9765/KSCOE.2013.25.3.147
  8. Kweon, H.M., Cho, I.H. and Cho, H.Y., 2013c, Heaving amplitude characteristics of the resonance power buoy in shallow water with an insufficient draft. International Journal of Naval Architecture and Ocean Engineering, 5(5), pp.614-624.
  9. Yoon, Y.G., Ju, Y.M., Kim, Y.S. and Kang, J.W., 2013. Site specific suitability of the wave energy farm. Korea Water Resources Association Conference, Gwangju, 23 May 2013, pp.486.