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Power calculations for a passively tuned point absorber wave energy converter on the Oregon coast

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  • Oskamp, Jeffrey A.
  • Özkan-Haller, H. Tuba

Abstract

A wave-structure interaction model is implemented, and power output estimates are made for a simplified wave energy converter operating in measured spectral wave conditions. In order to estimate power output from a wave energy converter, device response to hydrodynamic forces is computed using a boundary element method potential flow model. A method is outlined for using the hydrodynamic response to estimate power output. This method is demonstrated by considering an idealized non-resonating wave energy converter with one year of measured spectral wave conditions from the Oregon coast. The power calculation is performed in the frequency domain assuming a passive tuning system which is tuned at time scales ranging from hourly to annually. It is found that there is only a 3% gain in productivity by tuning hourly over tuning annually, suggesting that for a non-resonating wave energy converter, power output is not very sensitive to the value of the power take off damping. Interaction between wave energy converters in arrays is also considered, and results for an array of idealized point absorbers suggests that interactions are minimal when devices are placed 10 diameters apart from each other.

Suggested Citation

  • Oskamp, Jeffrey A. & Özkan-Haller, H. Tuba, 2012. "Power calculations for a passively tuned point absorber wave energy converter on the Oregon coast," Renewable Energy, Elsevier, vol. 45(C), pages 72-77.
    • Handle: RePEc:eee:renene:v:45:y:2012:i:c:p:72-77
    DOI: 10.1016/j.renene.2012.02.004
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    Cited by:

    1. Lin, Yonggang & Bao, Jingwei & Liu, Hongwei & Li, Wei & Tu, Le & Zhang, Dahai, 2015. "Review of hydraulic transmission technologies for wave power generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 194-203.
    2. Tunde Aderinto & Hua Li, 2019. "Review on Power Performance and Efficiency of Wave Energy Converters," Energies, MDPI, vol. 12(22), pages 1-24, November.
    3. Han, Meng & Cao, Feifei & Shi, Hongda & Zhu, Kai & Dong, Xiaochen & Li, Demin, 2023. "Layout optimisation of the two-body heaving wave energy converter array," Renewable Energy, Elsevier, vol. 205(C), pages 410-431.
    4. Goggins, Jamie & Finnegan, William, 2014. "Shape optimisation of floating wave energy converters for a specified wave energy spectrum," Renewable Energy, Elsevier, vol. 71(C), pages 208-220.
    5. Babarit, A., 2015. "A database of capture width ratio of wave energy converters," Renewable Energy, Elsevier, vol. 80(C), pages 610-628.
    6. Cai, Qinlin & Zhu, Songye, 2021. "Applying double-mass pendulum oscillator with tunable ultra-low frequency in wave energy converters," Applied Energy, Elsevier, vol. 298(C).
    7. Chandrasekaran, Srinivasan & Sricharan, V.V.S., 2020. "Numerical analysis of a new multi-body floating wave energy converter with a linear power take-off system," Renewable Energy, Elsevier, vol. 159(C), pages 250-271.
    8. Liguo Wang & Jan Isberg, 2015. "Nonlinear Passive Control of a Wave Energy Converter Subject to Constraints in Irregular Waves," Energies, MDPI, vol. 8(7), pages 1-15, June.
    9. Astariz, S. & Iglesias, G., 2015. "The economics of wave energy: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 45(C), pages 397-408.
    10. Liguo Wang & Jens Engström & Mats Leijon & Jan Isberg, 2016. "Coordinated Control of Wave Energy Converters Subject to Motion Constraints," Energies, MDPI, vol. 9(6), pages 1-14, June.
    11. Chen, Weixing & Wu, Zheng & Liu, Jimu & Jin, Zhenlin & Zhang, Xiantao & Gao, Feng, 2021. "Efficiency analysis of a 3-DOF wave energy converter (SJTU-WEC) based on modeling, simulation and experiment," Energy, Elsevier, vol. 220(C).

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