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Field tests of a highly flexible downwind ultralight rotor to mimic a 13-MW turbine rotor

Journal Article · · Journal of Physics. Conference Series
 [1];  [2];  [3];  [4];  [3];  [5];  [5];  [1];  [6];  [6];  [1];  [7];  [2];  [1];  [3]
  1. University of Virginia, Charlottesville, VA (United States)
  2. University of Illinois at Urbana-Champaign, IL (United States)
  3. University of Texas at Dallas, Richardson, TX (United States)
  4. RRD Engineering, LLC, Lakewood, CO (United States)
  5. Colorado School of Mines, Golden, CO (United States)
  6. University of Colorado, Boulder, CO (United States)
  7. National Renewable Energy Lab. (NREL), Golden, CO (United States)

Offshore extreme-scale turbines of 20–25 MW in size may offer reduced energy costs. The technical barriers at these extreme scales include escalating blade masses with increased flexibility as well as high gravity loads and tower-strike issues. These barriers may be addressed with a load-aligning downwind turbine. To investigate this type of design, a field test campaign was conducted with an aeroelastically scaled rotor, termed the Segmented Ultralight Morphing Rotor Demonstrator (SUMR-D). The tests were conducted on the Controls Advanced Research Turbine at the National Renewable Energy Laboratory. The paper gives an overview of the experimental diagnostics, blade design, and results of the field campaign, as well as makes conclusions and recommendations regarding extreme-scale highly flexible downwind rotors.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
Grant/Contract Number:
AC36-08GO28308; AR0000667
OSTI ID:
1874249
Report Number(s):
NREL/JA-5000-82466; MainId:83239; UUID:dc371c56-80f0-4eb6-bdb7-3f08fb805f96; MainAdminID:64289
Journal Information:
Journal of Physics. Conference Series, Journal Name: Journal of Physics. Conference Series Journal Issue: 3 Vol. 2265; ISSN 1742-6588
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Downwind coning concept rotor for a 25 MW offshore wind turbine journal August 2020
Servo-aero-gravo-elastic (SAGE) scaling and its application to a 13-MW downwind turbine journal November 2020
Structural design and optimization of a series of 13.2 MW downwind rotors journal January 2021
Generalized multipoint inverse airfoil design journal November 1992
Viscous-inviscid analysis of transonic and low Reynolds number airfoils journal October 1987
System-level design studies for large rotors journal January 2019

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