Cage Loads of Wind Turbine Blade Bearing

被引:4
|
作者
Buescher, M. [1 ]
Leupold, S. [1 ]
Schelenz, R. [1 ]
Jacobs, G. [1 ]
机构
[1] Rhein Westfal TH Aachen, Ctr Wind Power Drives, Campus Blvd 61, D-52074 Aachen, Germany
关键词
Wind turbine multibody simulation; blade bearing cage; finite element simulation;
D O I
10.1088/1742-6596/1618/5/052061
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Slewing bearings of wind turbine blades pitch system allow the required oscillation while transferring complex dynamical loads from the rotor blades towards the hub. Most common for this application are double rowed four-point contact ball bearings consisting of two rings and two rolling element sets either equipped with a ring cage or with spacers. By equally distributing the rolling elements along the circumference, the bearing cage balances the loads along the raceways and thereby actively prevents damage mechanisms. However, cage stress analyses imply further optimization potentials leading to higher load capacities and the prediction of cage damaging mechanisms via dynamic simulations. This contribution presents a simulation procedure that calculates rolling element dynamics at the presence of a ring cage by taking the perpendicular movement of the contact ellipses due to the elastic deformations of the bearing rings into account. The procedure is carried out exemplary by the load spectra of a 3 MW reference wind turbine and the actual geometry of a 2.4m diameter bearing.
引用
收藏
页数:10
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