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

verfasst von

Matthias Stammler, Fabian Schwack, Norbert Bader, Andreas Reuter, Gerhard Poll

Abstract

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.

Organisationseinheit(en)

Institut für Maschinenkonstruktion und Tribologie

Externe Organisation(en)

Fraunhofer-Institut für Windenergiesysteme (IWES)

Typ

Artikel

Journal

Wind Energy Science

Band

3

Seiten

97-105

Anzahl der Seiten

9

ISSN

2366-7443

Publikationsdatum

14.03.2018

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Energieanlagenbau und Kraftwerkstechnik, Erneuerbare Energien, Nachhaltigkeit und Umwelt

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.5194/wes-3-97-2018 (Zugang: Offen)
https://doi.org/10.15488/1812 (Zugang: Offen)