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Economic aspects of latching control for a wave energy converter with a direct drive linear generator power take-off

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  • Temiz, Irina
  • Leijon, Jennifer
  • Ekergård, Boel
  • Boström, Cecilia

Abstract

A wave energy converter (WEC) should be controlled in order to increase the average output power. In this paper, economic aspects of latching applied to a point absorbing WEC with a linear generator power take-off (PTO) are discussed. The capacity utilisation factor (CUF) is suggested to be used along with average absorbed power for control optimisation. Optimum and suboptimum latching controls are assessed for the WEC and compared with a constant damping PTO force control. The WEC performance is simulated using monochromatic waves for the wave conditions of the Wave Hub test site, UK. The linear wave theory is used in a hydro-mechanical two-body simulation model. It is shown that the latching controls possess considerable practical challenges significantly increasing the return of investment time periods.

Suggested Citation

  • Temiz, Irina & Leijon, Jennifer & Ekergård, Boel & Boström, Cecilia, 2018. "Economic aspects of latching control for a wave energy converter with a direct drive linear generator power take-off," Renewable Energy, Elsevier, vol. 128(PA), pages 57-67.
    • Handle: RePEc:eee:renene:v:128:y:2018:i:pa:p:57-67
    DOI: 10.1016/j.renene.2018.05.041
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    References listed on IDEAS

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    1. Yue Hong & Mikael Eriksson & Cecilia Boström & Rafael Waters, 2016. "Impact of Generator Stroke Length on Energy Production for a Direct Drive Wave Energy Converter," Energies, MDPI, vol. 9(9), pages 1-12, September.
    2. Sheng, Wanan & Alcorn, Raymond & Lewis, Anthony, 2015. "On improving wave energy conversion, part II: Development of latching control technologies," Renewable Energy, Elsevier, vol. 75(C), pages 935-944.
    3. Leijon, Mats & Bernhoff, Hans & Berg, Marcus & Ågren, Olov, 2003. "Economical considerations of renewable electric energy production—especially development of wave energy," Renewable Energy, Elsevier, vol. 28(8), pages 1201-1209.
    4. Henriques, J.C.C. & Gato, L.M.C. & Falcão, A.F.O. & Robles, E. & Faÿ, F.-X., 2016. "Latching control of a floating oscillating-water-column wave energy converter," Renewable Energy, Elsevier, vol. 90(C), pages 229-241.
    5. Sheng, Wanan & Alcorn, Raymond & Lewis, Anthony, 2015. "On improving wave energy conversion, part I: Optimal and control technologies," Renewable Energy, Elsevier, vol. 75(C), pages 922-934.
    6. 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.
    7. Valeria Castellucci & Mikael Eriksson & Rafael Waters, 2016. "Impact of Tidal Level Variations on Wave Energy Absorption at Wave Hub," Energies, MDPI, vol. 9(10), pages 1-11, October.
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    Cited by:

    1. Aqiang Zhao & Weimin Wu & Zuoyao Sun & Lixun Zhu & Kaiyuan Lu & Henry Chung & Frede Blaabjerg, 2019. "A Flower Pollination Method Based Global Maximum Power Point Tracking Strategy for Point-Absorbing Type Wave Energy Converters," Energies, MDPI, vol. 12(7), pages 1-19, April.
    2. Yue Hong & Irina Temiz & Jianfei Pan & Mikael Eriksson & Cecilia Boström, 2021. "Damping Studies on PMLG-Based Wave Energy Converter under Oceanic Wave Climates," Energies, MDPI, vol. 14(4), pages 1-21, February.
    3. Yue Hong & Mikael Eriksson & Cecilia Boström & Jianfei Pan & Yun Liu & Rafael Waters, 2020. "Damping Effect Coupled with the Internal Translator Mass of Linear Generator-Based Wave Energy Converters," Energies, MDPI, vol. 13(17), pages 1-14, August.
    4. Haraguchi, Ruriko & Asai, Takehiko, 2020. "Enhanced power absorption of a point absorber wave energy converter using a tuned inertial mass," Energy, Elsevier, vol. 202(C).
    5. Xuhui Yue & Feifeng Meng & Zhoubo Tong & Qijuan Chen & Dazhou Geng & Jiaying Liu, 2023. "Implementation Process Simulation and Performance Analysis for the Multi-Timescale Lookup-Table-Based Maximum Power Point Tracking under Variable Irregular Waves," Energies, MDPI, vol. 16(22), pages 1-26, November.
    6. Shadman, Milad & Guarniz Avalos, Gustavo Omar & Estefen, Segen F., 2021. "On the power performance of a wave energy converter with a direct mechanical drive power take-off system controlled by latching," Renewable Energy, Elsevier, vol. 169(C), pages 157-177.
    7. Aleix Maria-Arenas & Aitor J. Garrido & Eugen Rusu & Izaskun Garrido, 2019. "Control Strategies Applied to Wave Energy Converters: State of the Art," Energies, MDPI, vol. 12(16), pages 1-19, August.
    8. Yue, Xuhui & Geng, Dazhou & Chen, Qijuan & Zheng, Yang & Gao, Gongzheng & Xu, Lei, 2021. "2-D lookup table based MPPT: Another choice of improving the generating capacity of a wave power system," Renewable Energy, Elsevier, vol. 179(C), pages 625-640.

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