PELAMIS’s Hydro Dynamical Analyses and Mechanism Design of Wave Energy Converter Device (Semi-PELAMIS)

Saeidi Hamid Abad, Mohammad | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51794 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): AbbasPour, Majid
  7. Abstract:
  8. Pelamis is a semi-submersible device that can extract wave energy and converters that to electrical power. It has 5 cylindrical structure that connects through the joints. This device takes the shape of wave and the wave forces tubes to had angular relative motion together. The Main task of this device is to convert the angular movements of tubes to the Linear movement of pistons. External mechanism called the energy capture device are responsible for absorbing wave energy through angular movements, and then the internal mechanism, called the Power Take-Off, are responsible for converting this energy into the electrical power for use in the electricity grid. This device was designed and manufactured by an English company named Pelamis Wave Power and at first adapted for the Northern Scotland. Energy per unit length of wave crest in this region is 60-70 kW / m, according to the World Energy Agency, which is the same for the Persian Gulf is between 1-3 kW / m. The effects of joints stiffness and damping in previous researches was neglected while they had an sensational effects in hydrodynamic of pelamis. The purpose of this document is to Investigating and analyzing the influence of dimensions’ variation in power absorbed with pelamis WEC and then designing proper Energy Capture Device mechanism for Persian Gulf and Finally determining the design procedure of the Power Take-Off mechanism for that pelamis. For this purpose, the theory of design of experiment and Ansys Aqwa softwares be used and analyses be done for over 26 runs. Most important result from this analyses is the length of tubes that has to be adjusted relative to incident wave length
  9. Keywords:
  10. Pelamis Wave Energy Converter ; Wave Energy Converter (WEC) ; Renewable Energy Resources ; Hydrodynamic Analysis ; Experiments Design ; Mechanism Design

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