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Performance Improvement of a Hydraulic Active/Passive Heave Compensation Winch Using Semi Secondary Motor Control: Experimental and Numerical Verification

Author

Listed:
  • Geir-Arne Moslått

    (Department of Lifting and Handling, National Oilwell Varco, 4639 Kristiansand, Norway)

  • Michael Rygaard Hansen

    (Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway)

  • Damiano Padovani

    (Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway)

Abstract

In this paper, a newly developed controller for active heave compensated offshore cranes is compared with state-of-the-art control methods. The comparison is divided into a numerical part on stability margins as well as operational windows and an experimental validation of the expected performance improvement based on a full-scale testing on site with a crane rated to 250 metric tons. Such a crane represents the typical target for the new control method using a combination of active and passive hydraulic actuation on the main winch. The active hydraulic actuation is a hydrostatic transmission with variable-displacement pumps and variable-displacement motors. The new controller employs feedforward control of the motors’ displacement so that the window of operation is increased and, simultaneously, oscillations in the system are markedly reduced.

Suggested Citation

  • Geir-Arne Moslått & Michael Rygaard Hansen & Damiano Padovani, 2020. "Performance Improvement of a Hydraulic Active/Passive Heave Compensation Winch Using Semi Secondary Motor Control: Experimental and Numerical Verification," Energies, MDPI, vol. 13(10), pages 1-20, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:10:p:2671-:d:362861
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    Cited by:

    1. Thomas Farsakoglou & Henrik C. Pedersen & Morten K. Ebbesen & Torben O. Andersen, 2023. "Determining the Optimal Number of Pistons for Offshore Digital Winch Drives," Energies, MDPI, vol. 16(21), pages 1-18, October.

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