© The Institution of Engineering and Technology
Wind turbine gearbox bearings (WTGBs) are the most reliability critical component in wind turbine gearboxes because of their high failure rate and long downtime-per-failure. Current design methods predict bearing failure-by-fatigue life models. However, premature WTGB failures have been observed by many other modes. This study presents the development of a multibody dynamic gearbox model, used to determine maximum bearing contact stresses from laboratory measured shaft torque data during normal operation and shutdown conditions. The model was validated by comparing its results to other models of the 750 kW National Renewable Energy Laboratory test drive train by the Gearbox Reliability Collaborative. During normal operation, the maximum contact stress experienced by the planetary stage bearings exceeded recommended levels by 1% and during shutdown by 15%. High-speed shaft bearings also exceeded recommended levels during shutdown by 18%.
References
-
-
1)
-
24. Ricardo, P.L.C.: , 2012.
-
2)
-
12. Sankar, S., Nataraj, M., Raja, V.: ‘Failure analysis of bearing in wind turbine generator gearbox’, J. Inf. Syst. Commun., 2012, 3, (1), pp. 302–309.
-
3)
-
22. LaCava, W., Guo, Y., Xing, Y., Moan, T.: ‘Determining wind turbine gearbox model complexity using measurement validation and cost comparison’. Conf. Paper, National Renewable Energy Laboratory, NREL/CP-5000-54545, 2012.
-
4)
-
14. Luyckx, J.: ‘WEC failure mode on roller bearings’. Presentation at Wind Turbine Tribology Seminar, Hansen Transmissions, 2011.
-
5)
-
20. Oyague, F.: ‘Progressive dynamical drive train modeling as part of NREL gearbox reliability collaborative’. , National Renewable Energy Laboratory, 2008.
-
6)
-
16. Errichello, R., Budny, R., Eckert, R.: ‘Investigations of bearing failures associated with white etching areas (WEAs) in wind turbine gearboxes’, Tribol. Trans., 2013, 56, (6), pp. 1069–1076 (doi: 10.1080/10402004.2013.823531).
-
7)
-
2. Musial, W., Butterfield, S., McNiff, B.: ‘Improving wind turbine gearbox reliability’ (National Renewable Energy Laboratory, Boulder, Colorado, 2007).
-
8)
-
29. Hertz, H.: in ‘Hertz's miscellaneous papers’ (Macmillan & Co., London, UK, 1896).
-
9)
-
17. Greco, A., Sheng, S., Keller, J., Erdemir, A.: ‘Material wear and fatigue in wind turbine systems’, Wear, 2013, 302, (1–2), pp. 1583–1591 (doi: 10.1016/j.wear.2013.01.060).
-
10)
-
30. Guo, Y., Keller, J., LaCava, W.: ‘Combined effects of gravity, bending moment, bearing clearance, and input torque on wind turbine planetary gear load sharing’. Conf. Paper, National Renewable Energy Laboratory, NREL/CP-5000-55968, 2012.
-
11)
-
13. Rosinski, J., Smurthwaite, D.: ‘Troubleshooting wind gearbox problems’. Article, Gear Solutions, 2010.
-
12)
-
8. Commission of the European communities: ‘Offshore wind energy: action needed to deliver on the energy policy objectives for 2020 and beyond’. , COM, 2008, p. 768.
-
13)
-
15. Cambell, F.: ‘Elements of metallurgy and engineering alloys’ (ASM International, OH, 2008), pp. 243–262.
-
14)
-
3. Ribrant, J., Berting, L.M.: ‘Survey of failures in wind power systems with focus on Swedish wind power plants during 1997–2005’, Trans. Energy Convers., 2007, 22, (1), pp. 167–173 (doi: 10.1109/TEC.2006.889614).
-
15)
-
4. British Standards Institution: , 2008.
-
16)
-
19. Helsen, J., Vanhollebeke, F., Marrant, B., Vandepitte, D., Desmet, W.: ‘Multibody modelling of varying complexity for model behaviour analysis of wind turbine gearboxes’, Renew. Energy, 2011, 36, (11), pp. 3098–3113 (doi: 10.1016/j.renene.2011.03.023).
-
17)
-
31. Lacava, W., Keller, J., Mcniff, B.: ‘Gearbox reliability collaborative: test and model investigation of sun orbit and planet load share in a wind turbine gearbox’. Conf. Paper, National Renewable Energy Laboratory, NREL/CP-5000-54618, 2012.
-
18)
-
6. Jain, S., Hunt, H.: ‘A dynamic model to predict the occurrence of skidding in wind turbine gearbox bearings’, J. Phys., 2011, 305, (1).
-
19)
-
10. Stadler, K., Stubenrauch, A.: ‘Premature bearing failures in industrial gearboxes’. , 2013.
-
20)
-
34. Yu, S., Wang, D., Dong, H., Wang, B.: ‘A new method for determining load distributions among rollers of bearing with manufacturing errors’, J. Mech. Eng. Sci., 2013, 227, (11), pp. 2402–2415 (doi: 10.1177/0954406213477778).
-
21)
-
11. SKF Bearings: ‘Bearing failures and their causes’. , 1994.
-
22)
-
18. Peeters, J.L.M., Vandepitte, D., Sas, P.: ‘Analysis of internal drive train dynamics in a wind turbine’, Wind Energy, 2005, 9, (1–2), pp. 141–161 (doi: 10.1002/we.173).
-
23)
-
24)
-
9. Evans, M.H.: ‘White structure flaking (WSF) in wind turbine gearbox bearings: effects of ‘butterflies’ and white etching cracks (WEC)’, Mater. Sci. Technol., 2005, 28, (1), pp. 3–22.
-
25)
-
26. International organization for standardization: , 2006.
-
26)
-
5. Tavner, P.J., Xiang, J., Spinato, F.: ‘Reliability analysis for wind turbines’, Wind Energy, 2007, 10, (1), pp. 1–18 (doi: 10.1002/we.204).
-
27)
-
23. Houpert, L.: ‘A uniform analytical approach for ball and roller bearings calculations’, J. Tribol., 1997, 119, (4), pp. 851–858 (doi: 10.1115/1.2833896).
-
28)
-
1. Scott, K.S., Infield, D., Barltrop, N., Coultate, J., Shahaj, A.: ‘Effects of extreme and transient loads on wind turbine drive trains’. 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2011.
-
29)
-
7. Oyague, F.: ‘Gearbox modeling and load simulation of a baseline 750 kW wind turbine using state-of-the-art simulation codes’. , National Renewable Energy Laboratory, 2009.
-
30)
-
33. International organisation for standardization: , 2012.
-
31)
-
32. Lacava, W., Xing, Y., Marks, C., Guo, Y., Moan, T.: ‘Three-dimensional bearing load share behavior in the planetary stage of a wind turbine gearbox’, IET Renew. Power Gener., 2013, 7, (4), pp. 1416–1752 (doi: 10.1049/iet-rpg.2012.0274).
-
32)
-
27. NSK: ‘Bearing internal load distribution and displacement’. Chapter from Catalogue: Rolling Bearings, 2009.
-
33)
-
21. Link, H., LaCava, W., van Dam, J., et al: ‘Gearbox reliability collaborative project report: findings from phase 1 and phase 2 testing’. , National Renewable Energy Laboratory, 2011.
-
34)
-
28. Hertz, H.: ‘On the contact of elastic solids’, J. Reine Angew. Math., 1881, 92, pp. 156–171.
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