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Nonlinear Passive Control of a Wave Energy Converter Subject to Constraints in Irregular Waves

Author

Listed:
  • Liguo Wang

    (Department of Engineering Sciences, Swedish Centre for Renewable Electric Energy Conversion, Division of Electricity, the Ångström Laboratory, Uppsala University, P.O. Box 534, 75121 Uppsala, Sweden)

  • Jan Isberg

    (Department of Engineering Sciences, Swedish Centre for Renewable Electric Energy Conversion, Division of Electricity, the Ångström Laboratory, Uppsala University, P.O. Box 534, 75121 Uppsala, Sweden)

Abstract

This paper investigates a passive control method of a point absorbing wave energy converter by considering the displacement and velocity constraints under irregular waves in the time domain. A linear generator is used as a power take-off unit, and the equivalent damping force is optimized to improve the power production of the wave energy converter. The results from nonlinear and linear passive control methods are compared, and indicate that the nonlinear passive control method leads to the excitation force in phase with the velocity of the converter that can significantly improve the energy production of the converter.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:7:p:6528-6542:d:51841
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    References listed on IDEAS

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    Cited by:

    1. 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.
    2. Sudath Prasanna Gunawardane & Chathura Jayan Kankanamge & Tomiji Watabe, 2016. "Study on the Performance of the “Pendulor” Wave Energy Converter in an Array Configuration," Energies, MDPI, vol. 9(4), pages 1-26, April.
    3. Wang, Yingguang & Wang, Lifu, 2018. "Towards realistically predicting the power outputs of wave energy converters: Nonlinear simulation," Energy, Elsevier, vol. 144(C), pages 120-128.
    4. Wang, Yingguang, 2019. "Comparison of a Lagrangian and a Gaussian model for power output predictions in a random sea," Renewable Energy, Elsevier, vol. 134(C), pages 426-435.
    5. Wenlong Tian & Zhaoyong Mao & Fuliang Zhao, 2017. "Design and Numerical Simulations of a Flow Induced Vibration Energy Converter for Underwater Mooring Platforms," Energies, MDPI, vol. 10(9), pages 1-20, September.
    6. Wang, LiGuo & Lin, MaoFeng & Tedeschi, Elisabetta & Engström, Jens & Isberg, Jan, 2020. "Improving electric power generation of a standalone wave energy converter via optimal electric load control," Energy, Elsevier, vol. 211(C).
    7. Stefania Naty & Antonino Viviano & Enrico Foti, 2016. "Wave Energy Exploitation System Integrated in the Coastal Structure of a Mediterranean Port," Sustainability, MDPI, vol. 8(12), pages 1-19, December.
    8. Francisco Francisco & Jennifer Leijon & Cecilia Boström & Jens Engström & Jan Sundberg, 2018. "Wave Power as Solution for Off-Grid Water Desalination Systems: Resource Characterization for Kilifi-Kenya," Energies, MDPI, vol. 11(4), pages 1-14, April.
    9. Tunde Aderinto & Hua Li, 2018. "Ocean Wave Energy Converters: Status and Challenges," Energies, MDPI, vol. 11(5), pages 1-26, May.
    10. Wang, Liguo & Isberg, Jan & Tedeschi, Elisabetta, 2018. "Review of control strategies for wave energy conversion systems and their validation: the wave-to-wire approach," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 366-379.
    11. 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.

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