Parameter Study of a Low Frequency Two Body Wave Energy Converter

Ji, X, Shami, E, Wang, X and Zuo, L 2018, 'Parameter Study of a Low Frequency Two Body Wave Energy Converter', in 4th Asian Wave and Tidal Energy Conference 2018, Taipei, Taiwan, 9-13 September 2018, pp. 1-1.


Document type: Conference Paper
Collection: Conference Papers

Title Parameter Study of a Low Frequency Two Body Wave Energy Converter
Author(s) Ji, X
Shami, E
Wang, X
Zuo, L
Year 2018
Conference name 4th Asian Wave and Tidal Energy Conference 2018
Conference location Taipei, Taiwan
Conference dates 9-13 September 2018
Proceedings title 4th Asian Wave and Tidal Energy Conference 2018
Publisher AWTEC 2018
Place of publication Taipei, Taiwan
Start page 1
End page 1
Total pages 1
Abstract This paper studies a two-body wave energy converter which is a two-degrees-of-freedom oscillating point absorber. The two-body wave energy converter oscillating in heave with a floating body of variable geometry connected to a submerged body is designed for the Australian ocean wave conditions with excitation frequency ranging from 0.08 Hz to 0.12 Hz and wave height of 1 m. Taguchi method has been applied to investigate the system model parameters' influences on the average power output where the main input variable parameters are the power take-off stiffness and damping coefficients, submerged and floating body geometries, depth of the submerged body, floating body draft, diameter and geometry inclination angle. ANSYS AQWA is employed to obtain the hydrodynamic parameters in the regular wave conditions in order to calculate the output power. Both linear and non-linear dynamic models of the two-body wave energy converter will be analysed and simulated in both the time and frequency domains. The Power-take-off stiffness coefficient and submerged body geometry have been identified to be the most important parameters in influencing the average power output in the studied frequency range.
Subjects Renewable Power and Energy Systems Engineering (excl. Solar Cells)
Ocean Engineering
Dynamics, Vibration and Vibration Control
Keyword(s) 2 DOF
Point absorber
Taguchi method
Optimization
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