Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models

Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models

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 o...

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Main Authors: M. Stammler, F. Schwack, N. Bader, A. Reuter, G. Poll
Format: Article
Language:English
Published: Copernicus Publications 2018-03-01
Series:Wind Energy Science
Online Access:https://www.wind-energ-sci.net/3/97/2018/wes-3-97-2018.pdf
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spelling doaj-632cac1c79c44aeea3416a75d6586c4e2020-11-25T00:14:37ZengCopernicus PublicationsWind Energy Science2366-74432366-74512018-03-0139710510.5194/wes-3-97-2018Friction torque of wind-turbine pitch bearings – comparison of experimental results with available modelsM. Stammler0F. Schwack1N. Bader2A. Reuter3G. Poll4Fraunhofer IWES, Appelstraße 9A, 30167 Hanover, GermanyIMKT, Leibniz Universität Hannover, Welfengarten 1a, 30167 Hanover, GermanyIMKT, Leibniz Universität Hannover, Welfengarten 1a, 30167 Hanover, GermanyFraunhofer IWES, Appelstraße 9A, 30167 Hanover, GermanyIMKT, Leibniz Universität Hannover, Welfengarten 1a, 30167 Hanover, GermanyPitch 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.https://www.wind-energ-sci.net/3/97/2018/wes-3-97-2018.pdf
collection DOAJ
language English
format Article
sources DOAJ
author M. Stammler
F. Schwack
N. Bader
A. Reuter
G. Poll
spellingShingle M. Stammler
F. Schwack
N. Bader
A. Reuter
G. Poll
Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
Wind Energy Science
author_facet M. Stammler
F. Schwack
N. Bader
A. Reuter
G. Poll
author_sort M. Stammler
title Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
title_short Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
title_full Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
title_fullStr Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
title_full_unstemmed Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
title_sort friction torque of wind-turbine pitch bearings – comparison of experimental results with available models
publisher Copernicus Publications
series Wind Energy Science
issn 2366-7443
2366-7451
publishDate 2018-03-01
description 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.
url https://www.wind-energ-sci.net/3/97/2018/wes-3-97-2018.pdf
work_keys_str_mv AT mstammler frictiontorqueofwindturbinepitchbearingscomparisonofexperimentalresultswithavailablemodels
AT fschwack frictiontorqueofwindturbinepitchbearingscomparisonofexperimentalresultswithavailablemodels
AT nbader frictiontorqueofwindturbinepitchbearingscomparisonofexperimentalresultswithavailablemodels
AT areuter frictiontorqueofwindturbinepitchbearingscomparisonofexperimentalresultswithavailablemodels
AT gpoll frictiontorqueofwindturbinepitchbearingscomparisonofexperimentalresultswithavailablemodels
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