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Title: Investigating Main and High-Speed Shaft Bearing Reliability through Uptower Testing

Abstract

The most prevalent failure modes in wind turbine drivetrains are main bearing failures stemming from micropitting, white etching or axial cracks in gearbox bearings, and generator bearing failures. These failures are neither well understood nor accounted for in design standards; consequently, the mitigation strategies being developed and fielded may only partially address the physics of failure and can take years to assess. The U.S. Department of Energy continues to support research programs to investigate the influence of rolling element sliding on the formation of bearing axial cracks and main bearing micropitting.

Authors:
ORCiD logo [1]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
OSTI Identifier:
1439550
Report Number(s):
NREL/PR-5000-70958
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at Drivetrain Reliability Collaborative Meeting, 20-21 February 2018, Golden, Colorado
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 42 ENGINEERING; wind energy; wind turbine; drivetrain; failures; rolling element sliding; micropitting

Citation Formats

Keller, Jonathan A. Investigating Main and High-Speed Shaft Bearing Reliability through Uptower Testing. United States: N. p., 2018. Web.
Keller, Jonathan A. Investigating Main and High-Speed Shaft Bearing Reliability through Uptower Testing. United States.
Keller, Jonathan A. Thu . "Investigating Main and High-Speed Shaft Bearing Reliability through Uptower Testing". United States. doi:. https://www.osti.gov/servlets/purl/1439550.
@article{osti_1439550,
title = {Investigating Main and High-Speed Shaft Bearing Reliability through Uptower Testing},
author = {Keller, Jonathan A},
abstractNote = {The most prevalent failure modes in wind turbine drivetrains are main bearing failures stemming from micropitting, white etching or axial cracks in gearbox bearings, and generator bearing failures. These failures are neither well understood nor accounted for in design standards; consequently, the mitigation strategies being developed and fielded may only partially address the physics of failure and can take years to assess. The U.S. Department of Energy continues to support research programs to investigate the influence of rolling element sliding on the formation of bearing axial cracks and main bearing micropitting.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 24 00:00:00 EDT 2018},
month = {Thu May 24 00:00:00 EDT 2018}
}

Conference:
Other availability
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