This paper summarizes the control design work that was performed to optimize the controller of a wind turbine on the WindFloat structure. The WindFloat is a semisubmersible floating platform designed to be a support structure for a multimegawatt power-generating wind turbine. A controller developed for a bottom-fixed wind turbine configuration was modified for use when the turbine is mounted on the WindFloat platform. This results in an efficient platform heel resonance mitigation scheme. In addition, several control modules, designed with a coupled linear model, were added to the fixed-bottom baseline controller. The approach was tested in a fully coupled nonlinear aero-hydro-elastic simulation tool in which wind and wave disturbances were modeled. This testing yielded significant improvements in platform global performance and tower-base bending loading.
Wind Turbine Controller to Mitigate Structural Loads on a Floating Wind Turbine Platform
National Renewable Energy Laboratory,
Golden, CO 80305
e-mail: paul.fleming@nrel.gov
Hochshule Flensburg University of Applied Sciences,
Hochschule Flensburg, Kanzleistraße 91–93,
24943 Flensburg,
e-mail: david.schlipf@hs-flensburg.de
National Renewable Energy Laboratory,
Golden, CO 80305
e-mail: paul.fleming@nrel.gov
Hochshule Flensburg University of Applied Sciences,
Hochschule Flensburg, Kanzleistraße 91–93,
24943 Flensburg,
e-mail: david.schlipf@hs-flensburg.de
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the Journal of Offshore Mechanics and Arctic Engineering. Manuscript received August 17, 2016; final manuscript received January 15, 2019; published online March 20, 2019. Assoc. Editor: Yin Lu Young. The United States Government retains, and by accepting the article for publication, the publisher acknowledges that the United States Government retains, a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for United States Government purposes.
Fleming, P. A., Peiffer, A., and Schlipf, D. (March 20, 2019). "Wind Turbine Controller to Mitigate Structural Loads on a Floating Wind Turbine Platform." ASME. J. Offshore Mech. Arct. Eng. December 2019; 141(6): 061901. https://doi.org/10.1115/1.4042938
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