Date

2023-1-26

Author

Koçlar, Yaşar Çağatay

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Planetary gear sets are utilized in various critical applications. Being one of these applications, investigation of wind turbine systems is essential to improve sub-systems such as planetary gearbox, yaw gear, and pitch system under different conditions. In this study, a new finite element model is proposed for obtaining the transient load on the gears of a planetary gearset, and examining the failure types. As an improvement, determination of critical loading scenario for gearset, modeling the blades as a link between the gearset and wind load, and differences between two different beam models are investigated. The model is simulated under reverse load condition which is caused by the sudden change of direction of the wind. The outcome of the simulations shows that the beam model, which takes into account shear deformation, performs within the expected levels according to the literature. Besides, by comparing the outputs of the simulation results, the failure of the gears under an extreme condition is estimated to be due to bending moment on the gear root rather than pitting on the gear tooth surface. As a recommendation for further research, it is suggested to consider reverse load condition in gear designs for wind turbines in order to better understand their behaviour.

Subject Keywords

Planetary gearbox system, Wind turbines, Reverse load condition

URI

https://hdl.handle.net/11511/102571

Collections

Northern Cyprus Campus, Thesis