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Numerical Investigation of a Tuned Heave Plate Energy-Harvesting System of a Semi-Submersible Platform

Author

Listed:
  • Kun Liu

    (School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
    Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education (Harbin Institute of Technology), Harbin 150090, China)

  • Haizhi Liang

    (Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China)

  • Jinping Ou

    (School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
    Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education (Harbin Institute of Technology), Harbin 150090, China
    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China)

Abstract

A novel tuned heave plate energy-harvesting system (THPEH) is presented for the motion suppressing and energy harvesting of a semi-submersible platform. This THPEH system is designed based on the principle of a tuned mass damper (TMD) and is composed of spring supports, a power take-off system (PTO) and four movable heave plates. The permanent magnet linear generators (PMLG) are used as the PTO system in this design. A semi-submersible platform operating in the South China Sea is selected as the research subject for investigating the effects of the THPEH system on motion reduction and harvesting energy through numerical simulations. The numerical model of the platform and the THPEH system, which was established based on hydrodynamic analysis, is modified and validated by the results of the flume test of a 1:70 scale model. The effects of the parameters, including the size, the frequency ratio and the damping ratio of the THPEH system, are systematically investigated. The results show that this THPEH system, with proper parameters, could significantly reduce the motions of the semi-submersible platform and generate considerable power under different wave conditions.

Suggested Citation

  • Kun Liu & Haizhi Liang & Jinping Ou, 2016. "Numerical Investigation of a Tuned Heave Plate Energy-Harvesting System of a Semi-Submersible Platform," Energies, MDPI, vol. 9(2), pages 1-22, January.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:2:p:82-:d:63056
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