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Research on Energy-Capture Characteristics of a Direct-Drive Wave-Energy Converter Based on Parallel Mechanism

Author

Listed:
  • Tao Yao

    (School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
    National Engineering Research Center for Technological Innovation Method and Tool, Hebei University of Technology, Tianjin 300130, China)

  • Yulong Wang

    (School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
    National Engineering Research Center for Technological Innovation Method and Tool, Hebei University of Technology, Tianjin 300130, China)

  • Zhihua Wang

    (School of Electrical Engineering, Hebei University of Technology, Tianjin 300130, China)

  • Tongxian Li

    (School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
    National Engineering Research Center for Technological Innovation Method and Tool, Hebei University of Technology, Tianjin 300130, China)

  • Zhipeng Tan

    (School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
    National Engineering Research Center for Technological Innovation Method and Tool, Hebei University of Technology, Tianjin 300130, China)

Abstract

Aiming at the capture and conversion of multidirection wave energy, a multifreedom direct-drive wave-energy converter (WEC) based on a parallel mechanism is studied. The dynamic model of WEC was conducted based on force analysis and hydrodynamic theory, and the inverse kinematic solutions of each branch chain of the mechanism were obtained following the space vector method. Furthermore, the kinetics response of the linear generator branch chain was obtained. Moreover, the influence on the capture efficiency of the device’s geometric structure scale was investigated under different sea conditions. To evaluate the performance of the WEC, a linear generator model was simulated and analyzed by COMSOL Multiphysics. A laboratory prototype was manufactured. The test results indicated that the multifreedom device can achieve better power conversion performance than traditional single degree of freedom (DOF) devices. This study provides ideas for the design and development of large multi-DOF wave-energy-conversion devices.

Suggested Citation

  • Tao Yao & Yulong Wang & Zhihua Wang & Tongxian Li & Zhipeng Tan, 2022. "Research on Energy-Capture Characteristics of a Direct-Drive Wave-Energy Converter Based on Parallel Mechanism," Energies, MDPI, vol. 15(5), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1670-:d:756914
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    References listed on IDEAS

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