Flexure pitch bearing concept for individual pitch control of wind turbines

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Jüttner M, Hasse A, Tremmel S
Zeitschrift: Wind Energy
Jahr der Veröffentlichung: 2017
ISSN: 1095-4244
Sprache: Englisch


The excessive use of individual pitch control (IPC) for fatigue load reduction is accompanied by the uncertainty of potential bearing failures. This problem, which is due to the small swivel angles associated with IPC, arises because of the rolling and sliding contacts that occur with the rolling element bearings that are typically used. The use of a flexure bearing is proposed as a way of bypassing this issue. The flexure bearing enables a certain range of motion to be exclusively provided by elastic deformation. This article presents a novel bearing concept that is based on the hypothesis that such a flexure bearing can handle the unfavorable load conditions associated with IPC better than a rolling element bearing. Methods for the dimensioning of the aforementioned flexure bearing are therefore presented. The loads, particularly the required elastic rotation angle of the flexure bearing, are determined first. A promising design for the flexure bearing itself is then chosen and adapted to meet the specific requirements of IPC. These methods are applied to develop an initial conceptual design of the novel bearing unit for a 3-bladed wind turbine of about 3.6 MW. The result demonstrates the feasibility of the concept, and a final discussion presents further opportunities of the design that will make this concept satisfy the special requirements of IPC.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Hasse, Alexander Prof. Dr.
Professur für Mechatronische Systeme
Jüttner, Michael
Professur für Mechatronische Systeme
Tremmel, Stephan Dr.-Ing.
Lehrstuhl für Konstruktionstechnik


Jüttner, M., Hasse, A., & Tremmel, S. (2017). Flexure pitch bearing concept for individual pitch control of wind turbines. Wind Energy. https://dx.doi.org/10.1002/we.2149

Jüttner, Michael, Alexander Hasse, and Stephan Tremmel. "Flexure pitch bearing concept for individual pitch control of wind turbines." Wind Energy (2017).


Zuletzt aktualisiert 2018-11-08 um 02:01