Details
| Original language | English |
|---|---|
| Article number | 042016 |
| Journal | Journal of Physics: Conference Series |
| Volume | 1037 |
| Issue number | 4 |
| Publication status | Published - 19 Jun 2018 |
| Event | 7th Science of Making Torque from Wind, TORQUE 2018 - Milan, Italy Duration: 20 Jun 2018 → 22 Jun 2018 |
Abstract
Pitch bearings of wind turbines are large, grease-lubricated rolling bearings that connect the rotor blades with the rotor hub. Rolling bearings are the standard bearing type for this application. Most blade bearings are four-point bearings with one or two rows. Three-row roller bearings with two axial rows and one radial row have higher costs, but are an increasingly used alternative. Both rotor blade and rotor hub have a varying stiffness along the circumference of the bearing rings. This results in rotationally non-symmetric load sharing (load distributions) of the bearing rollers. The load distribution depends on the pitch angle, the load magnitude and the load angle. In this paper, we evaluate the load sharing of such a three-row bearing for a reference wind turbine of the 3 MW-class, taking account of the stiffness of the interface parts hub and rotor blade. A set of finite-element simulations with varying loads, load angles and pitch angles has been executed to determine the influence of the named parameters on the loads of the individual rollers. Curve fits of these discrete load points allow the determination of roller loads for any given parameter combination. One application of the results is the determination of the overall bearing load which is a key input for fatigue lifetime calculations.
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In: Journal of Physics: Conference Series, Vol. 1037, No. 4, 042016, 19.06.2018.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Load distribution in a roller-type rotor blade bearing
AU - Stammler, Matthias
AU - Baust, Sebastian
AU - Reuter, Andreas
AU - Poll, Gerhard
N1 - Funding Information: (Project number 0325918A). The project funding by the German Federal Ministry for Economic Affairs and Energy is kindly acknowledged. Publisher Copyright: © Published under licence by IOP Publishing Ltd. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/6/19
Y1 - 2018/6/19
N2 - Pitch bearings of wind turbines are large, grease-lubricated rolling bearings that connect the rotor blades with the rotor hub. Rolling bearings are the standard bearing type for this application. Most blade bearings are four-point bearings with one or two rows. Three-row roller bearings with two axial rows and one radial row have higher costs, but are an increasingly used alternative. Both rotor blade and rotor hub have a varying stiffness along the circumference of the bearing rings. This results in rotationally non-symmetric load sharing (load distributions) of the bearing rollers. The load distribution depends on the pitch angle, the load magnitude and the load angle. In this paper, we evaluate the load sharing of such a three-row bearing for a reference wind turbine of the 3 MW-class, taking account of the stiffness of the interface parts hub and rotor blade. A set of finite-element simulations with varying loads, load angles and pitch angles has been executed to determine the influence of the named parameters on the loads of the individual rollers. Curve fits of these discrete load points allow the determination of roller loads for any given parameter combination. One application of the results is the determination of the overall bearing load which is a key input for fatigue lifetime calculations.
AB - Pitch bearings of wind turbines are large, grease-lubricated rolling bearings that connect the rotor blades with the rotor hub. Rolling bearings are the standard bearing type for this application. Most blade bearings are four-point bearings with one or two rows. Three-row roller bearings with two axial rows and one radial row have higher costs, but are an increasingly used alternative. Both rotor blade and rotor hub have a varying stiffness along the circumference of the bearing rings. This results in rotationally non-symmetric load sharing (load distributions) of the bearing rollers. The load distribution depends on the pitch angle, the load magnitude and the load angle. In this paper, we evaluate the load sharing of such a three-row bearing for a reference wind turbine of the 3 MW-class, taking account of the stiffness of the interface parts hub and rotor blade. A set of finite-element simulations with varying loads, load angles and pitch angles has been executed to determine the influence of the named parameters on the loads of the individual rollers. Curve fits of these discrete load points allow the determination of roller loads for any given parameter combination. One application of the results is the determination of the overall bearing load which is a key input for fatigue lifetime calculations.
UR - http://www.scopus.com/inward/record.url?scp=85049647978&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1037/4/042016
DO - 10.1088/1742-6596/1037/4/042016
M3 - Conference article
AN - SCOPUS:85049647978
VL - 1037
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 4
M1 - 042016
T2 - 7th Science of Making Torque from Wind, TORQUE 2018
Y2 - 20 June 2018 through 22 June 2018
ER -