Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
| Autor: | Matthias Stammler, Gerhard Poll, Norbert Bader, Andreas Reuter, Fabian Schwack |
|---|---|
| Přispěvatelé: | Publica |
| Rok vydání: | 2018 |
| Předmět: |
Engineering
lcsh:TJ807-830 lcsh:Renewable energy sources Energy Engineering and Power Technology 02 engineering and technology Turbine law.invention Physics::Fluid Dynamics 0203 mechanical engineering law wind turbines wind energy Torque Dewey Decimal Classification::300 | Sozialwissenschaften Soziologie Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333 7 | Natürliche Ressourcen Energie und Umwelt Friction torque Wind power Renewable Energy Sustainability and the Environment business.industry Rotor (electric) Blade pitch Structural engineering 021001 nanoscience & nanotechnology Hydraulic cylinder 020303 mechanical engineering & transports ddc:333.7 0210 nano-technology business Actuator ddc:333 7 |
| Zdroj: | Wind Energy Science, Vol 3, Pp 97-105 (2018) Wind Energy Science 3 (2018) |
| ISSN: | 2366-7451 |
| DOI: | 10.5194/wes-3-97-2018 |
| Popis: | Pitch bearings of wind turbines are large, grease-lubricated rolling bearings that connect the rotor blades with the rotor hub. They are used to turn the rotor blades to control the power output and/or structural loads of the turbine. Common actuators turning the blades are hydraulic cylinders or electrical motor / gearbox combinations. In order to design pitch actuator systems that are able to turn the blades reliably without imposing an excessive power demand, it is necessary to predict the friction torque of pitch bearings for different operating conditions. In this paper, the results of torque measurements under load are presented and compared to results obtained using different calculation models. The results of this comparison indicate the various sources of friction that should be taken into account for a reliable calculation model. |
| Databáze: | OpenAIRE |
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