Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Development of a Multi-Absorbing Wave Energy Converter using Pressure Coupling Principle

압력커플링을 이용한 다수개의 부표를 가진 파력발전기 개발

  • 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 : 2014.05.12
  • Accepted : 2014.08.20
  • Published : 2014.09.01
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Abstract

This paper proposes a multi absorbing wave energy converter design, in which a hydrostatic transmission is used to transfer wave energy to electric energy. The most important feature of this system is its combination of the pressure coupling principle with the use of a hydraulic accumulator to eliminate the effects of wave power fluctuation; this maintains a constant speed of the hydraulic motor. Tilt motion of a floating buoy was employed as the power take-off mechanism. Furthermore, a PID controller was designed to carry out the speed control of the hydraulic motor. The design offers some advantages such as extending the life of the hydraulic components, increasing the amount of energy harvested, and stabilizing the output speed.

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References

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