0
Technical Briefs

Characteristic Analysis of Wind Turbine Gearbox Considering Non-Torque Loading

[+] Author and Article Information
Young-Jun Park

Senior Researcher
e-mail: yjpark77@kimm.re.kr

Geun-Ho Lee

Principal Researcher
e-mail: ghlee762@kimm.re.kr

Jin-Seop Song

Senior Researcher
e-mail: jssong@kimm.re.kr

Yong-Yun Nam

Principal Researcher
e-mail: yynam@kimm.re.kr
Department of System Reliability,
Korea Institute of Machinery & Materials,
Daejeon 305-343, Republic of Korea

Contributed by the Power Transmission and Gearing Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received July 20, 2012; final manuscript received January 10, 2013; published online March 22, 2013. Assoc. Editor: Qi Fan.

J. Mech. Des 135(4), 044501 (Mar 22, 2013) (8 pages) Paper No: MD-12-1366; doi: 10.1115/1.4023590 History: Received July 20, 2012; Revised January 10, 2013

In the design of wind turbine gearboxes, the most important objective is to improve the durability to guarantee a service life of more than 20 years. This work investigates how external loads caused by wind fluctuation influence both the load distribution over the gear tooth flank and the planet load sharing. A whole system model is developed to analyze a wind turbine gearbox (WTG) that consists of planetary gearsets. Two models for different design loads are employed to quantify how external loads acting on the input shaft of the WTG affect the load distribution of the gears and the load sharing among the planets under quasi-static conditions. One model considers only the torque for the design load, whereas the other model also considers non-torque loads. For two models, the results for the gear mesh misalignment, contact pattern, load distribution, and load sharing are different, and this leads to different gear safety factors. Therefore, the results indicate that it is appropriate to consider the non-torque loads in addition to the torque as the design load for a WTG, and that this is very important to accurately determine the design load that guarantee the service life of a WTG.

FIGURES IN THIS ARTICLE
<>
Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Structure of 2 MW WTG in this study

Grahic Jump Location
Fig. 2

Model of planetary gearset

Grahic Jump Location
Fig. 3

Coordinate system of design load

Grahic Jump Location
Fig. 4

Comparison of system deflections

Grahic Jump Location
Fig. 5

Comparison of maximum radial displacements of low-speed shaft

Grahic Jump Location
Fig. 6

Signs of gear mesh misalignment

Grahic Jump Location
Fig. 7

Variation in gear mesh misalignment of (a) LS PGS, (b) HS PGS in case II model and (c) LS PGS, (d) HS PGS in case I model

Grahic Jump Location
Fig. 8

Contact patterns of sun-planet meshes of LS PGS in case II model

Grahic Jump Location
Fig. 9

Contact patterns of planet-ring meshes of LS PGS in case II model

Grahic Jump Location
Fig. 10

Variation of torques acting on planet pins of (a) LS PGS and (b) HS PGS in case I and II models

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In