DOI QR코드

DOI QR Code

Investigation of Moving Angle of Power Take off Mechanism on the Efficiency of Wave Energy Converter

파력발전기의 동력인출장치의 회전각도가 효율에 미치는 영향 분석

  • Do, H.T. (Graduate school of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Nguyen, M.T. (Graduate school of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Phan, C.B. (Graduate school of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Lee, S.Y. (Graduate school of Mechanical and Automotive Engineering, University of Ulsan) ;
  • Park, H.G. (School of Mechanical Engineering, University of Ulsan) ;
  • Ahn, K.K. (School of Mechanical Engineering, University of Ulsan)
  • Received : 2015.07.27
  • Accepted : 2015.08.27
  • Published : 2015.09.01

Abstract

The hydraulic power-take-off mechanism (HPTO) is one of the most popular methods in wave energy converters (WECs). However, the conventional HPTO with only one direction motion has a number of drawbacks that limit its power capture capability. This paper proposes an adjustable moving angle wave energy converter (AMAWEC) and investigates the effect of the moving angle on the performance of the wave energy converter to find the optimal moving angle in order to increase the power capture capability as well as energy efficiency. A mathematical model of components from a floating buoy to a hydraulic motor was modeled. A small scale WEC test rig was fabricated to verify the power capture capability and efficiency of the proposed system through experiments.

Keywords

References

  1. G. Nielse, M. Andersen, K. Argyriadis, S. Butterfield, N. Fonseca, T. Kuroiwa, M. L. Boulluec, S. J. Liao, S. R. Turnock, J. Waegter, "Specialist Committee V.4: Ocean Wind and Wave Energy Utilization", 16th Int. Ship and Offshore Structures Congress, pp. 165-211, 2006.
  2. J. A. Oskamp, H. T. Ozkan-Haller, "Power calculations for a passively tuned point absorber wave energy converter on the Oregon coast," Renewable Energy, Vol.45, pp. 72-77, 2012. https://doi.org/10.1016/j.renene.2012.02.004
  3. A. S. Zurkinden, F. Ferri, S. Beatty, J. P. Kofoed, M. M. Kramer, "Non-linear numerical modeling and experimental testing of a point absorber wave energy converter," Ocean Engineering, Vol.78, pp.11-21, 2014. https://doi.org/10.1016/j.oceaneng.2013.12.009
  4. H. Heikkinen, M. J. Lampinen, J. Boling, "Analytical study of the interaction between waves and cylindrical wave energy converters oscillating in two modes," Renewable Energy, Vol.50, pp. 150-160, 2013. https://doi.org/10.1016/j.renene.2012.06.023
  5. M. Folley, T. W. T. Whittaker and J. van't Hoff, "The design of small seabed-mounted bottom-hinged wave energy converter," Proc. of 7th European Wave and Tidal Energy Conference, Portugal, 2007.
  6. M. Anbarsooz, M. Passandideh-Fard, M. Moghiman, "Fully nonlinear viscous wave generation in numerical wave tanks," Ocean Engineering Vol.59, pp. 73-85, 2013. https://doi.org/10.1016/j.oceaneng.2012.11.011
  7. R. H. Hansen, T. O. Andersen and H. C. Pedersen "Model based design of efficient power take-off systems for wave energy converters," 12th Scandinavian International Conf. on Fluid Power, Finland, 2011.
  8. M. J. Ketabdari and A. Ranginkaman "Simulation of Random Irregular Sea Waves for Numerical and Physical Models Using Digital Filters," Transaction B: Mechanical Engineering, Vol.16 No.3, pp. 240-247, 2009.
  9. J. Falnes, Ocean Waves and Oscillating Systems, Cambridge University Press, Cambridge, 2002.
  10. C. Cargo, A. Plummer, A. Hillis and M. Schlotter "Optimal design of a realistic hydraulic power take-off in irregular waves," Centre of Power Transmission and Motion Control- University of Bath, 2011.
  11. M. G. Rabie, Fluid Power Engineering, McGraw-Hill, 2009.
  12. M. J. Pinches and J. G. Ashby, Power Hydraulics, Englewood Cliffs, NJ: Prentice-Hall, 1988.
  13. T. H. Ho and K. K. Ahn, "Modeling and simulation of a hydrostatic transmission system with energy recuperation using a hydraulic accumulator," JMST, Vol.24, No.5, pp. 1163-1175, 2010.
  14. M. E. McCormick, Ocean Engineering Mechanics with Applications, Cambridge University Press, 2010.

Cited by

  1. Power take-off system based on continuously variable transmission configuration for wave energy converter vol.5, pp.1, 2018, https://doi.org/10.1007/s40684-018-0010-0