Articles | Volume 3, issue 1
https://doi.org/10.5194/wes-3-97-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/wes-3-97-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
14 Mar 2018
Research article |
| 14 Mar 2018
Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
Matthias Stammler
CORRESPONDING AUTHOR
Fraunhofer IWES, Appelstraße 9A, 30167 Hanover, Germany
Fabian Schwack
IMKT, Leibniz Universität Hannover, Welfengarten 1a, 30167
Hanover, Germany
Norbert Bader
IMKT, Leibniz Universität Hannover, Welfengarten 1a, 30167
Hanover, Germany
Andreas Reuter
Fraunhofer IWES, Appelstraße 9A, 30167 Hanover, Germany
Gerhard Poll
IMKT, Leibniz Universität Hannover, Welfengarten 1a, 30167
Hanover, Germany
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Cited
20 citations as recorded by crossref.
- Model-based compensation and uncertainty analysis of support bearing losses in a chain drive dynamometer R. Wragge-Morley et al.
- Operational Pitch Actuation Dynamics for Offshore Wind Turbines Ranging from 5 to 50 MW M. Jeong et al.
- A study of grease lubricants under wind turbine pitch bearing conditions F. Schwack et al.
- Tribological challenges and advancements in wind turbine bearings: A review A. Dhanola & H. Garg
- The generalized Maxwell-slip friction model applied to starting of small wind turbines R. Ribeiro et al.
- Evaluation of lidar-assisted wind turbine control under various turbulence characteristics F. Guo et al.
- Prediction of the friction torque of scaled blade bearings in a test rig using machine learning M. Hohmann et al.
- Assessment of the renewable energy generation towards net-zero energy buildings: A review A. Ahmed et al.
- Results of wear endurance runs of wind turbine pitch bearings M. Stammler & M. Geibel
- Wear in wind turbine pitch bearings—A comparative design study F. Schwack et al.
- Improved Formulation for Sliding Friction Torque of Deep Groove Ball Bearings G. Rivera et al.
- Rolling contact fatigue calculation of a three-row roller pitch bearing in a wind turbine O. Menck et al.
- A Systematic Approach for Energy-Efficient Design of Rolling Bearing Cages A. Gaydamaka et al.
- Load distribution in a roller-type rotor blade bearing M. Stammler et al.
- An estimation method of bearing frictional power losses in a propulsion shaft through a tribo-dynamic model Y. Xu et al.
- Effect of load reduction mechanisms on loads and blade bearing movements of wind turbines M. Stammler et al.
- Measurements and modeling of friction torque of wind turbine blade bearings O. Menck et al.
- An engineering approach for the estimation of slewing bearing stiffness in wind turbine generators I. Heras et al.
- Towards a Model-Based Methodology for Rating and Monitoring Wear Risk in Oscillating Grease-Lubricated Rolling Bearings A. Bartschat et al.
- Virtual Commissioning and Digital Twins for Energy-Aware Industrial Electric Drive Systems S. Bysko et al.
20 citations as recorded by crossref.
- Model-based compensation and uncertainty analysis of support bearing losses in a chain drive dynamometer R. Wragge-Morley et al.
- Operational Pitch Actuation Dynamics for Offshore Wind Turbines Ranging from 5 to 50 MW M. Jeong et al.
- A study of grease lubricants under wind turbine pitch bearing conditions F. Schwack et al.
- Tribological challenges and advancements in wind turbine bearings: A review A. Dhanola & H. Garg
- The generalized Maxwell-slip friction model applied to starting of small wind turbines R. Ribeiro et al.
- Evaluation of lidar-assisted wind turbine control under various turbulence characteristics F. Guo et al.
- Prediction of the friction torque of scaled blade bearings in a test rig using machine learning M. Hohmann et al.
- Assessment of the renewable energy generation towards net-zero energy buildings: A review A. Ahmed et al.
- Results of wear endurance runs of wind turbine pitch bearings M. Stammler & M. Geibel
- Wear in wind turbine pitch bearings—A comparative design study F. Schwack et al.
- Improved Formulation for Sliding Friction Torque of Deep Groove Ball Bearings G. Rivera et al.
- Rolling contact fatigue calculation of a three-row roller pitch bearing in a wind turbine O. Menck et al.
- A Systematic Approach for Energy-Efficient Design of Rolling Bearing Cages A. Gaydamaka et al.
- Load distribution in a roller-type rotor blade bearing M. Stammler et al.
- An estimation method of bearing frictional power losses in a propulsion shaft through a tribo-dynamic model Y. Xu et al.
- Effect of load reduction mechanisms on loads and blade bearing movements of wind turbines M. Stammler et al.
- Measurements and modeling of friction torque of wind turbine blade bearings O. Menck et al.
- An engineering approach for the estimation of slewing bearing stiffness in wind turbine generators I. Heras et al.
- Towards a Model-Based Methodology for Rating and Monitoring Wear Risk in Oscillating Grease-Lubricated Rolling Bearings A. Bartschat et al.
- Virtual Commissioning and Digital Twins for Energy-Aware Industrial Electric Drive Systems S. Bysko et al.
Saved (final revised paper)
Latest update: 25 Apr 2026
Short summary
Modern wind turbines all share the ability to turn (pitch) the blades around their main axis. By pitching the blades, the aerodynamic forces created by the blades are controlled. Rolling bearings, consisting of two steel rings and balls that roll on raceways between them, are used to allow pitching. To design pitch drives, it is necessary to know the losses within the bearings. This article describes how such losses have been measured and compares them with calculation models.
Modern wind turbines all share the ability to turn (pitch) the blades around their main axis. By...
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