Performance improvement of a hydraulic active/passive heave compensation winch using semi secondary motor control: Experimental and numerical verification

Geir Arne Moslått*, Michael Rygaard Hansen, Damiano Padovani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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.

Original languageEnglish
Article numberen13102671
JournalEnergies
Volume13
Issue number10
DOIs
StatePublished - May 2020
Externally publishedYes

Keywords

  • Active heave compensation
  • Hydrostatic transmission
  • Winch

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