Analysis, design and experiment investigation of a novel wave energy converter

Analysis, design and experiment investigation of a novel wave energy converter

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This study presents an innovative design for a wave energy converter (WEC). The system is based on a novel mechanical power take-off (PTO) device that can absorb wave energy by converting the bidirectional motion of an ocean wave into the one-way rotation of an electric generator. First, the PTO mechanism and configuration are described in detail. A coupled mechanical and hydrodynamic time-domain simulation of a hemispherical floating buoy connected to a bidirectional gearbox and torque generation device under regular waves were modelled in MATLAB®/Simulink®. The hydrodynamic forces acting on the semi-submerged floating buoy are calculated by employing linear potential wave theory. The friction behaviour in the PTO system is modelled by using Brian Armstrong's method. Next, an average wave energy and absorbed energy calculation was applied to investigate the conversion efficiency of the WEC. Finally, the experimental setup is carried out in a water tank under various conditions to evaluate the performance of WEC and validate the modelling. The results indicate that high-energy conversion efficiency of generating electricity from waves is approachable, thanks to the high efficiency of the proposed device.


    1. 1)
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
      • 6. Binh, P.C., Truong, D.Q., Ahn, K.K.: ‘A study on wave energy conversion using direct linear generator’. 12th Int. Conf. on Control, Automation and Systems, Jeju Island, Korea, October 2012, pp. 6469.
    7. 7)
    8. 8)
      • 8. ‘OPT: Ocean Power Technologies’. Available at, accessed 20 November 2014.
    9. 9)
      • 9. ‘WavePlane’. Available at, accessed 20 November 2014.
    10. 10)
      • 10. ‘Wavestar’. Available at, accessed 20 November 2014.
    11. 11)
    12. 12)
    13. 13)
    14. 14)
      • 14. Masjono, M., Salama, M., Zahir, Z., et al: ‘Modelling and numerical simulation of multiple one way gears wave energy converter to generate electricity’. Int. Conf. on Smart Green Technology in Electrical and Information Systems, Kuta, Indonesia, November 2014, pp. 7377.
    15. 15)
      • 15. ‘Ocean Navitas Ltd - Aegir Dynamo Coastal Buoy’. Available at, accessed 20 November 2014.
    16. 16)
      • 16. ‘Corpower Ocean’. Available at, accessed 20 November 2014.
    17. 17)
      • 17. Falnes, J.: ‘Ocean waves and oscillating systems, linear interaction including wave-energy extraction’ (UK Cambridge University Press, 2002).
    18. 18)
      • 18. Armstrong, B., de Wit, C.C.: ‘Friction modelling and compensation’, ‘The control handbook’ (CRC Press, 1995).
    19. 19)
      • 19. ‘WAMIT V7.0 user manual’. Available at, accessed 20 November 2014.
    20. 20)
      • 20. Cummins, W.E.: ‘The impulse response function and ship motions’. Symp. on Ship Theory, Inst. ffur Shiffbau, Hamburg, Germany, October 1962.

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