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Experimental results of rectification and filtration from an offshore wave energy system

Author

Listed:
  • Boström, C.
  • Lejerskog, E.
  • Stålberg, M.
  • Thorburn, K.
  • Leijon, M.

Abstract

The present paper presents results from a wave energy conversion that is based on a direct drive linear generator. The linear generator is placed on the seabed and connected to a buoy via a rope. Thereby, the natural wave motion is transferred to the translator by the buoy motion. When using direct drive generators, voltage and current output will have varying frequency and varying amplitude and the power must be converted before a grid connection. The electrical system is therefore an important part to study in the complete conversion system from wave energy to grid connected power. This paper will bring up the first steps in the conversion: rectification and filtration of the power. Both simulation studies and offshore experiments have been made. The results indicate that this kind of system works in a satisfactory way and a smooth DC power can be achieved with one linear generator.

Suggested Citation

  • Boström, C. & Lejerskog, E. & Stålberg, M. & Thorburn, K. & Leijon, M., 2009. "Experimental results of rectification and filtration from an offshore wave energy system," Renewable Energy, Elsevier, vol. 34(5), pages 1381-1387.
    • Handle: RePEc:eee:renene:v:34:y:2009:i:5:p:1381-1387
    DOI: 10.1016/j.renene.2008.09.010
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    References listed on IDEAS

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    1. Leijon, M. & Danielsson, O. & Eriksson, M. & Thorburn, K. & Bernhoff, H. & Isberg, J. & Sundberg, J. & Ivanova, I. & Sjöstedt, E. & Ågren, O. & Karlsson, K.E. & Wolfbrandt, A., 2006. "An electrical approach to wave energy conversion," Renewable Energy, Elsevier, vol. 31(9), pages 1309-1319.
    2. Kofoed, Jens Peter & Frigaard, Peter & Friis-Madsen, Erik & Sørensen, Hans Chr., 2006. "Prototype testing of the wave energy converter wave dragon," Renewable Energy, Elsevier, vol. 31(2), pages 181-189.
    3. Henderson, Ross, 2006. "Design, simulation, and testing of a novel hydraulic power take-off system for the Pelamis wave energy converter," Renewable Energy, Elsevier, vol. 31(2), pages 271-283.
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    Cited by:

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    2. Ramadan, A. & Mohamed, M.H. & Abdien, S.M. & Marzouk, S.Y. & El Feky, A. & El Baz, A.R., 2014. "Analytical investigation and experimental validation of an inverted cup float used for wave energy conversion," Energy, Elsevier, vol. 70(C), pages 539-546.
    3. Tunde Aderinto & Hua Li, 2018. "Ocean Wave Energy Converters: Status and Challenges," Energies, MDPI, vol. 11(5), pages 1-26, May.
    4. Amon, Ean & Brekken, Ted K.A. & von Jouanne, Annette, 2011. "A power analysis and data acquisition system for ocean wave energy device testing," Renewable Energy, Elsevier, vol. 36(7), pages 1922-1930.
    5. 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.
    6. Ozkop, Emre & Altas, Ismail H., 2017. "Control, power and electrical components in wave energy conversion systems: A review of the technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 106-115.

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