Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Cycle counting of roller bearing oscillations - case study of wind turbine individual pitching system

 
: Stammler, Matthias; Reuter, Andreas; Poll, Gerhard

:
Fulltext (PDF; )

Renewable energy focus 25 (2018), pp.40-47
ISSN: 1755-0084
ISSN: 1878-0229
Bundesministerium für Wirtschaft und Technologie BMWi
0325918A; HAPT
Beschleunigte Dauerprüfung von Blattlagern für Multi-Megawatt-Turbinen / Highly Accelerated Pitch Bearing Tests
English
Journal Article, Electronic Publication
Fraunhofer IWES ()

Abstract
The amplitude, frequency and number of oscillating movements have a significant impact on the possible damage modes of rolling bearings. Changes in amplitude change both the fatigue and wear risk of the raceways. In order to properly calculate the fatigue lifetime of an oscillating bearing, estimate the risk of surface-induced damage modes and design test programs for such bearings, it is necessary to understand the characteristics of the oscillating movements. This paper presents a comprehensive method for the analysis of time series data including position and loads. The method is applied to the simulated time-series data of the IWT 7.5-164 reference wind turbine. Wind turbine blades typically experience wide-band dynamic loads due to stochastic wind conditions. Therefore, it is important to use time series based cycle counting methods.

: http://publica.fraunhofer.de/documents/N-490687.html