Acoustic Emission Measurement of a Wind Turbine Main Bearing

Yi Guo, Allan Thomson, Roger Bergua, Olle Bankestrom, Joe Erskine, Jonathan Keller

Research output: NRELTechnical Report


This report described acoustic emissions and temperature characteristics of a commercial main bearing in a wind turbine drivetrain. These characteristics were measured on the outer ring of the bearing by SKF DVST nodes, which are mounted on both upwind and downwind rows of the main bearing at four equally spaced circumferential locations. The measurement started in early 2018 and ends in 2020 and five-month data in 2018 winter was analyzed in this study.
Original languageAmerican English
Number of pages24
StatePublished - 2022

NREL Publication Number

  • NREL/TP-5000-83370


  • acoustic emission
  • main bearing
  • reliability


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