Title: Insights in wind turbine drive train dynamics gathered by validating advanced models on a newly developed 13.2MW dynamically controlled test-rig
Authors: Helsen, Jan ×
Vanhollebeke, Frederik
De Coninck, Filip
Vandepitte, Dirk
Desmet, Wim #
Issue Date: Jun-2011
Publisher: Pergamon Press
Series Title: Mechatronics vol:21 issue:4 pages:737-752
Abstract: Guaranteeing reliable and cost-effective wind turbine drive trains requires expert insights in
dynamics during operation. A combination of advanced modeling techniques and detailed measurements
are suggested to realize this goal. The flexible multibody modeling technique enables
the simulation of dynamic loads on all drive train components. Moreover it facilitates estimation
of structural component deformation caused by dynamic loading. This paper gives a detailed
overview of the assumptions made in this modeling approach. Furthermore the influence of the
different structural component flexibilities is investigated in detail. To gain confidence in the
models created, model validation by means of a comparison with measurements is necessary. To
overcome issues concerning test repeatability experienced in field testing, test-rig testing is suggested
as a valid alternative. In order to be representative, dedicated dynamic load cases, which
represent specific dynamic behavior of the gearbox in a wind turbine need to be realized on the
test-rig. However a highly dynamic test-rig complying with the specifications was not commercially
available. Therefore Hansen developed a high dynamic test-rig with a nominal power of
13.2 MW and a peak power capacity of 16.8 MW. A back-to-back gearbox configuration was
used. The complexity of controlling dynamics of the test-rig was solved by identifying dedicated
load cases which represent specific wind turbine behavior. This paper describes the development
process of the project consisting of four phases. During two phases a scaled set-up was used,
which enabled iterative optimization of the complex interaction between the mechanical dynamics
and the electrical controller of the test rig. In the final part of the paper the two previously
discussed approaches are combined, as it discusses results from the validation of simulation
models using measurements performed on the 13.2MW test-rig.
ISSN: 0957-4158
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Production Engineering, Machine Design and Automation (PMA) Section
× corresponding author
# (joint) last author

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