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Experimental study on motions of VLCO for wave power generation (2. Multiple floating bodies)

파력발전용 가변수주진동장치의 운동에 대한 실험적 연구 (2. 다수 부유체)

  • Received : 2013.02.06
  • Accepted : 2013.12.18
  • Published : 2013.12.31

Abstract

The structure of a variable liquid column oscillator(VLCO) is analogous to that of the tuned liquid column damper used to suppress oscillatory motion in large structures like tall buildings and cargo ships. The VLCO is a system for absorbing the high kinetic energy of the accelerated motions of multiple floating bodies using an air-spring effect produced the installation of inner air chambers. Thus, a VLCO can improve the energy efficiency of the activating object type of wave energy converters made by the Pelamis Company. In this research, an experiment was performed in two cases: with the top valves closed and open. The floating bodies were connected by hinges. The effect of the internal flow was estimated by comparing the results for the closed and open valves.

Keywords

Variable liquid column oscillator;Wave power generation;Activating object type;Motion response;Multiple floating bodies

References

  1. Pelamis Wave Power, 2009. Pelamis Brochure. [Online] Available at: [Accessed 31 May, 2011]
  2. Parker, R.P.M., Harrison, G.P., Chick, J.P., 2007. Energy and Carbon Audit of an Offshore Wave Energy Converter, Proc. IMechE, Vol.221, part A:J. Power and Energy, 1119-1130. https://doi.org/10.1243/09576509JPE483
  3. Yang, D.S., Cho, B.H., 2009. Studies on Variable Liguid-Column Oscillator for High Efficiency Floating Wave Energy Conversion System, Journal of Ocean Engineering and Technology, 23(5), 15-24.
  4. Cho, B.H., Yang, D.S., Park, S.Y., Choi, K.S., Lee, D.H., Byun, S.H., Jung, H., 2011. Modeling and Control of a 75 kW Class Variable Liquid-column Oscillator for Highly Efficient Wave Energy Converter, Journal of Ocean Engineering, 38, 436-443. https://doi.org/10.1016/j.oceaneng.2010.11.017

Acknowledgement

Supported by : 부경대학교