3D motion compensation for an offshore crane

Assessing the feasibility for wind turbine maintenance

Master thesis (2017)

Authors

J.R. Buijs Mechanical Engineering

Contributors

A.P. van 't Veer (supervisor 1)
P.R. Wellens (supervisor 2)
A. Nuttall (supervisor 2)
M.J.B.M. Pourquie (supervisor 2)
J.F.J. Pruyn (supervisor 2)
Faculty
Mechanical Engineering
Copyright: © 2017 Roderick Buijs
Frequency domain Workability Time domain Motion compensation Feasibility Offshore crane
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Published Date

20-11-2017

Language

English

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Faculty

Mechanical Engineering

Abstract

When working offshore on a floating vessel, the vessel will be subjected to wave induced motions and with a moving crane tip, a suspended load can start to swing. When the motions of the load become too large, the operation is interrupted. Alternatives such as jack-ups, function as a fixed platform to which the crane is attached, therefore eliminating the effect of waves on the workability of the vessel. Within the offshore wind industry, jack-ups are used for installation and maintenance of wind turbines. However, due to their slow transit speed and time-consuming jacking process, an alternative is suggested with which wind turbine maintenance can be performed. In this thesis study, the mechanical feasibility of a motion compensated crane for wind turbine maintenance is assessed by comparing three different crane concepts.