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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
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https://doi.org/10.5194/wes-2020-58
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2020-58
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  24 Mar 2020

24 Mar 2020

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This preprint is currently under review for the journal WES.

Constructing Fast and Representative Analytical Models of Wind Turbine Main-Bearings

James Stirling1, Edward Hart2, and Abbas Kazemi Amiri2 James Stirling et al.
  • 1Wind and Marine Energy Systems CDT, EEE, University of Strathclyde, Glasgow, UK
  • 2Wind Energy and Control Centre, EEE, University of Strathclyde, Glasgow, UK

Abstract. This paper considers the modelling of wind turbine main bearings using analytical models. The validity of simplified analytical representations used in existing work is explored by comparing main bearing force reactions with those obtained from higher fidelity 3D finite element models. Results indicate that there is good agreement between the analytical and 3D models in the case of a non moment-reacting case (such as for a spherical roller bearing), but, the same does not hold in the moment reacting case (such as for tapered roller bearings). Therefore, a new analytical model is developed in which moment reactions at the main bearing are captured through the addition of torsional springs. This latter model is shown to improve the agreement between analytical and 3D models in the moment reacting case. The new analytical model is then used to investigate load characteristics, in terms of forces and moments, for this type of main bearing across different operating points and wind conditions.

James Stirling et al.

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James Stirling et al.

James Stirling et al.

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This paper considers the modelling of wind turbine main bearings using analytical models. The validity of simplified analytical representations is explored by comparing main bearing force reactions with those obtained from higher fidelity 3D finite element models. Results indicate that good agreement can be achieved between the analytical and 3D models in the case of both non moment-reacting (such as for a spherical roller bearing) and moment reacting (such as a tapered roller bearing) set ups.
This paper considers the modelling of wind turbine main bearings using analytical models. The...
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