Test and Analysis of Friction Torque for Wind Turbine Pitch Bearing

Abstract:

In this paper, we introduce a new test method for friction performance of wind turbine pitch bearing. Four loading devices are used to put on load on the pitch bearing from different directions through load board. It can accurately simulate the axial force, radial force and overturning moment of wind turbine pitch bearing. The data acquisition device can measure the value of speed, torque and actual output load of loading hydraulic cylinder. After analysis and calculation, the influence of additional friction torque produced by loading device can be obviated, the friction torque of wind turbine pitch bearing under different loads can be test accurately in the laboratory. The research shows that the structure of test bed is compact, mechanical rigidity is good, the replacement of bearing model is expedient. It puts on load easily and can measure the frictional torque of wind turbine pitch bearing under different loads more accurately. It can provide data for performance analysis of wind turbine pitch bearing and ensure the pitch bearing satisfying the application requirements.

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 2601-2604
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.2601
• Online since: February 2011
• Authors: Ming Zhu Zhang, Hong Tao Li, Hai Tao Zhao
• Keywords: Bearing Test-Bed, Frictional Torque, Load, Test, Wind Turbine Pitch Bearing

References

[1] Liangfeng, in: The Test-Bed of Wind Turbine Pitch Bearing [P]. National Invention Patent, CN101183044A. 2007-12-4. in Chinese.

[2] Nanjing University of Technology, in: Comprehensive Test-Bed of Wind Turbine Slewing Bearings [P]. National Invention Patent, CN101419125A. 2008-12-8. in Chinese.

[3] Jianheng Wen, in: MW Level NC Friction Torque Test-Bad of Wind Turbine Pitch Bearing [P]. National Invention Patent, CN201177538Y. 2008-2-22. in Chinese.

[4] Aihua Zhu, Chengjiu Zhu, Weihua Zhang, in: Analysis on Calculation of Friction Torque of Rolling Bearings [J]. bearing. 2008. No 7: 1-3. in Chinese.

[5] Zhidong Xu, in: Analysis Calculation on Oil Film Thickness in EHL Elliptical Contact Zone and Friction Torque of Rolling Bearing [J]. bearing. 2008, No 4: 10-12. in Chinese.