Dynamic Analysis of Wind Turbine Planetary Gears Using an Extended Harmonic Balance Approach

Y. Guo, J. Keller, R. G. Parker

Research output: Contribution to conferencePaperpeer-review

18 Scopus Citations

Abstract

The dynamics of wind turbine planetary gears with gravity effects are investigated using an extended harmonic balance method that includes simultaneous internal and external excitations. This method along with arc-length continuation and Floquet theory is applied to a lumped-parameter planetary gear model including gravity, fluctuating mesh stiffness, bearing clearance, and nonlinear tooth contact to obtain the planetary gear dynamic response. The calculated responses compare well with time-domain-integrated mathematical models and experimental results. Gravity is a fundamental vibration source in wind turbine planetary gears and plays an important role in system dynamics, causing hardening effects induced by tooth wedging and bearing-raceway contacts. Bearing clearance significantly reduces the lowest resonant frequencies of translational modes. Gravity and bearing clearance together lower the speed at which tooth wedging occurs below the resonant frequency.

Original languageAmerican English
Pages4329-4342
Number of pages14
StatePublished - 2012
Event25th International Conference on Noise and Vibration engineering, ISMA2012 in conjunction with the 4th International Conference on Uncertainty in Structural Dynamics, USD 2012 - Leuven, Belgium
Duration: 17 Sep 201219 Sep 2012

Conference

Conference25th International Conference on Noise and Vibration engineering, ISMA2012 in conjunction with the 4th International Conference on Uncertainty in Structural Dynamics, USD 2012
Country/TerritoryBelgium
CityLeuven
Period17/09/1219/09/12

Bibliographical note

See NREL/CP-5000-55355 for preprint

NREL Publication Number

  • NREL/CP-5000-62924

Keywords

  • gearboxes
  • reliability
  • wind turbine

Fingerprint

Dive into the research topics of 'Dynamic Analysis of Wind Turbine Planetary Gears Using an Extended Harmonic Balance Approach'. Together they form a unique fingerprint.

Cite this