Study of Dynamic Characteristics of 2.5-MW Wind Turbine Gearbox

2.5MW 풍력발전기 기어박스 동특성 연구

  • Received : 2014.03.15
  • Accepted : 2014.08.19
  • Published : 2014.08.30


In this study, a gearbox and blade were modeled in the MASTA program, and the housing and carrier components were modeled using a finite element method. Using substructure synthesis, all the components were combined and used to establish a vibration model of a 2.5-MW wind turbine gearbox. In addition, the safety displacement factor was evaluated using an AGMA data sheet about bearing's outer race for the input shaft and output shaft. As a result, the bearing's outer race for the input shaft, and the radial and axial responses were satisfied by the $1^{st}$ and $2^{nd}$ planetary gears and the $3^{nd}$ helical gear transmission error(TE), respectively. However, the output shaft support bearing's outer race responses were not satisfied with the radial response by the $2^{nd}$ TE and axial response by the $3^{rd}$ TE. To reduce the vibration, tooth modification was needed. After profile tooth modification, at the outer race of the output shaft support bearing, the radial response was reduced by approximately $20{\mu}m$, and the axial response was reduced by approximately $6{\mu}m$.


Wind turbine;Gearbox;Transmission Error;Vibration


  1. Vanhollebeke, F., Helsen, J., Peeters, J., Vandepitte, D., W.Desmet., 2012. Combining Multibody and Acoustic Simulation Models for Wind Turbine Gearbox NVH Optimisation, International Conference on Noise and Vibration Engineering, 4453-4467.
  2. Peeters, J., 2006, Simulation of Dynamic Drive Train Load in a Wind Turbine. Katholieke Universiteit Leuven.
  3. SMT(Smart Manufacturing Technology), 2010. MASTA version 5.1 Advanced Training Manual, 1-45.
  4. Todorov, M., Vukov, G., 2011. Modal Properties of Drive Train in Horizontal-axis Wind Turbine. Proceedings of International Conference on Innovations-Recent Trends and Challenges in Mechatronics, 3, 160-168.
  5. Heier, S., Waddington, R., 2006, Grid Integration of Wind Energy Conversion System, 2nd Edition, John Wiley & Son.
  6. AGMA, 1996. AGMA 6000-B96-Specification for Measurement of Linear Vibration on Gear Units.
  7. Chowdhury, I., Dasgupta, S.P., 2003. Computation of Rayleigh Damping Coefficients for Large Systems, Electronic Journal of Geotechnical Engineering, 8(Bundle 8C).
  8. Craig. R.R., Bampton. M.C.C., 1968. Coupling of Substructure for Dynamic Analysis, American Institute of Aeronautics and Astronautics, 6, 1313-1319.
  9. Lee, H.W.., and Kang, D.K., 2014. Gear Teeth Modification for a 2.5MW Wind Turbine Gearbox, Journal of the Korean Society of Manufacturing Technology Engineers, 23(2), 109-117.
  10. Hurty. W.C., 1960. Vibrations of Structural Systems by Component Mode Systhesis, Journal of the Engineering Mechanics Division, 86.
  11. ISO, 2006. ISO 6336-1-Calculation of Load Capacity of Spurand Helical Gears-part1:Basic Principles, Introduction and General Influence Factors.
  12. Kasuba. R., Evans. J.W., 1980. An Extended Model for Determining Dynamic Loads in Spur Gearing, American Society of Mechanical Engineers paper80-C2/DET-90.
  13. Kim, J.S., Lee, H.W., Park, N.G., Lee, D.H, 2012. A Study on Wind Load Variation Characteristics of Wind Turbine Gearbox, Journal of the Korean Society of Marine Engineering, 36(2), 267-275.
  14. Kim, J.S., Lee, H.W, Park, N.G., Kim, Y.D., Kim, S.Y., Lee, D.H., 2011. Characteristic of Vibration in Wind turbine System, Journal of the Korean Society of Marine Engineering, 35(6), 786-795.
  15. MAAG, 1990. MAAG Gear Book, MAAG Gear-Wheel Company.
  16. Park, N.G., Lee, H.W., 2010. An Investigation on the Characteristics of Gear Trains of Wind turbines, Journal of the Korean Society of Marine Engineering, 34(6), 806-815.


Supported by : 부산대학교