The National Renewable Energy Laboratory (NREL) Gearbox Reliability Collaborative (GRC) was established by the U.S. Department of Energy in 2006; its key goal is to understand the root causes of premature gearbox failures and improve their reliability. The GRC uses a combined gearbox testing, modeling, and analysis approach disseminating data and results to the industry and facilitating improvement of gearbox reliability. This test data describes the tests of GRC gearbox 2 in the National Wind Technology Center dynamometer and documents any modifications to the original test plan. It serves as a guide to interpret the publicly released data sets with brief analyses to illustrate the data. TDMS viewer and Solidworks software required to view data files.
| Name | Size | Type | Resource Description | History |
|---|---|---|---|---|
| Gearbox Reliability Collaborative Phase 3 Gearbox 2 Test | 0 KB | Website | This test report describes the recent tests of GRC gearbox (GB) 2 in the National Wind Technology Center (NWTC) dynamometer and documents any modifications to the original test plan. | |
| 2D Drawings.zip | 7.9 MB | Archive | PDF Format. Engineering drawings of GRC gearbox (GB) 2 showing basic part dimensions, characteristics and assembly procedures. | |
| 3D Models.zip | 52.7 MB | Archive | Solidworks Format. Solid body models of GRC gearbox (GB) 2 for visualization and other analyses. | |
| 5.1.1 HSS Investigations.zip | 46.1 MB | Archive | TDMS files measuring torque variation on the high speed shaft. | |
| 5.2.2 Dynamic NTL.zip | 56.5 MB | Archive | TDMS files. Dynamic nontorque rotor loads were applied to the drivetrain at a range of power levels and the gearbox response was measured | |
| 5.2.3 Static Thrust.zip | 249.8 MB | Archive | TDMS files. Static thrust loads were applied to the drivetrain at a range of power levels and the gearbox response was measured. | |
| 5.3 Generator Misalignment.zip | 136.6 MB | Archive | TDMS files. The generator was intentionally radially misaligned from the gearbox. | |
| 5.4.1 Normal Power Production.zip | 147.5 MB | Archive | TDMS files. Simulated field conditions resulted in excellent agreement with actual torque and bending measurements. | |
| 5.4.2 Shutdown.zip | 11.8 MB | Archive | TDMS files. Main shaft torque oscillation is measured upon application of a disk brake. | |
| 5.5 Grid Disconnect.zip | 143.9 MB | Archive | TDMS files. A grid disconnect is simulated vial a controlled shutdown. Reverse torque is observed. | |
| Static NTL Test Log2.xlsx | 88 KB | Data | Log of tests | |
| 5.2.1 Static NTL 0 Power 1800 RPM.zip | 209.3 MB | Archive | TDMS files. Static nontorque rotor loads were applied to the drivetrain at a range of power levels and the gearbox response was measured. 0% | |
| 5.2.1 Static NTL 10 Power.zip | 18 MB | Archive | TDMS files. Static nontorque rotor loads were applied to the drivetrain at a range of power levels and the gearbox response was measured. 10% | |
| 5.2.1 Static NTL 25 Power.zip | 228.9 MB | Archive | TDMS files. Static nontorque rotor loads were applied to the drivetrain at a range of power levels and the gearbox response was measured. 25 | |
| 5.2.1 Static NTL 50 Power.zip | 256.7 MB | Archive | TDMS files. Static nontorque rotor loads were applied to the drivetrain at a range of power levels and the gearbox response was measured. 50% | |
| 5.2.1 Static NTL 75 Power.zip | 244.3 MB | Archive | TDMS files. Static nontorque rotor loads were applied to the drivetrain at a range of power levels and the gearbox response was measured. 75% | |
| 5.2.1 Static NTL 100 Power.zip | 251.9 MB | Archive | TDMS files. Static nontorque rotor loads were applied to the drivetrain at a range of power levels and the gearbox response was measured. 100% |
Keywords
Submitted
• May •
02
2016
Cite This Dataset
Keller, Jonathan, and Wallen Robb. 2016. "Gearbox Reliability Collaborative Phase 3 Gearbox 2 Test." NLR Data Catalog. Golden, CO: National Laboratory of the Rockies. Last updated: May 22, 2026. DOI: 10.7799/1254154.
About This Dataset
45
10.7799/1254154
Public
05/22/2026
DOE Project
1.5.2.401 Wind Turbine Drivetrain Reliability
Facilities
National Wind Technology Center (NWTC)
Funding Organization
Department of Energy (DOE)
Sponsoring Organization
USDOE
Research Areas
Wind Energy
License
View License
Digital Object Identifier
10.7799/1254154