Abstract
AbstractSymmetrical spherical roller bearings (SSRB) used as main bearings for wind turbines are known for their high load carrying capacity. Nevertheless, even designed after state-of-the-art guidelines premature failures of this bearing type occur. One promising solution to overcome this problem are asymmetrical spherical roller bearings (ASRB). Using ASRB the contact angles of the two bearing rows can be adjusted individually to the load situation occurring during operation. In this study the differences between symmetrical and asymmetrical spherical roller bearings are analyzed using the finite element method (FEM). Therefore, FEM models for a three point suspension system of a wind turbine including both bearings types are developed. These FEM models are validated with measurement data gained at a full-size wind turbine system test bench. Taking into account the design loads of the investigated wind turbine it is shown that the use of an ASRB leads to a more uniform load distribution on the individual bearing rows. Considering fatigue-induced damage an increase of the bearing life by 62% can be achieved. Regarding interactions with other components of the rotor suspension system it can be stated that the transfer of axial forces into the gearbox is decreased significantly.
Publisher
Springer Science and Business Media LLC
Reference11 articles.
1. Hart E (2019) Wind turbine main-bearing loading and wind field characteristics. Wind Energy 22(11):1534–1547
2. Hart E (2020) A review of wind turbine main bearings: design, operation, modelling, damage mechanisms and fault detection. Wind Energy Sci 5(1):105–124
3. Schaeffler https://www.schaeffler.com/remotemedien/media/_shared_media/08_media_library/01_publications/schaeffler_2/brochure/downloads_1/osp_de_en.pdf. Accessed 11 Dec 2020
4. Reisch S (2017) Challenges and opportunities of full size nacelle testing of wind turbine generators. In: The Proceedings of the JSME international conference on motion and power transmissions 2017, The Japan Society of Mechanical Engineers Kyoto
5. Reisch S (2020) Einfluss der Lagerbauform auf die mechanische Beanspruchung des Hauptlagers in Windenergieanlagen. RWTH Aachen, Aachen
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献