NREL-Prime Next-Generation Drivetrain Dynamometer Test Report

Jonathan Keller, Bill Erdman, Douglas Blodgett, Christopher Halse

Research output: NRELTechnical Report


Advances in wind turbine drivetrain technologies are necessary to improve reliability and reduce the cost of energy for land-based and offshore wind turbines. The NREL-Prime Next-Generation Drivetrain team developed a geared, medium-speed drivetrain that is lighter, more reliable and more efficient than existing designs. One of the objectives of Phase II of the project was to complete the detailed design, fabrication, and dynamometer testing of a 750 kilowatt (kW) drivetrain that includes the key gearbox innovations designed by Romax Technology and power converter innovations designed by DNV Kema Renewables. The purpose of this document is to summarize these tests completed in NREL's National Wind Technology Center 2.5 megawatt (MW) dynamometer.
Original languageAmerican English
Number of pages45
StatePublished - 2016

NREL Publication Number

  • NREL/TP-5000-66350


  • cost of energy
  • drivetrain
  • next-generation drivetrain
  • NREL
  • testing
  • wind turbine


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