Advanced Wind Turbine Program Next Generation Turbine ... - NREL

Figure 22. POC Main Control Cabinet ........................................................................................ 49
Figure 23. POC 34-m Blade Planform......................................................................................... 51
Figure 24. NGT POC Airfoil Family........................................................................................... 52
Figure 25. 18% Airfoil Model in the WSU Wind Tunnel Test .................................................... 52
Figure 26. Prototype Set of the GE34a Blades at Tecsis ............................................................. 53
Figure 27. Static Blade Tests ........................................................................................................ 54
Figure 28. Static Blade Test Setup................................................................................................ 54
Figure 29. NWTC Fatigue Test Setup ......................................................................................... 55
Figure 30. POC Hub ..................................................................................................................... 56
Figure 31. POC Turbine Rotor Being Installed ........................................................................... 57
Figure 32. POC Turbine Installed in Tehachapi, California ......................................................... 57
Figure 33. Comparison of Theoretical and Measured POC Power Curves .................................. 58
Figure 34. Comparison of the POC Noise Levels to Historical Levels ........................................ 59
Figure 35. Comparison of Noise Levels and Rotor Tip Speeds ................................................... 60
Figure 36. Benefits to COE from Increasing Rotor Size and Turbine Rating .............................. 64
Figure 37. Predicted Power Performance for the EMD1.5/77 Turbine ....................................... 65
Figure 38. EMD 37-m (GE37a) Blade.......................................................................................... 66
Figure 39. EMD Tower-Top Accelerometer Package ................................................................. 68
Figure 40. Flowchart of the EMD Tower Top Accelerometer Feedback .................................... 68
Figure 41. EMD Turbine Installed in Tehachapi, California........................................................ 71
Figure 42. Comparison of Theoretical and Measured EMD Power Curves ................................. 71
Figure 43. Comparison of the EMD Noise Levels to Historical Levels ....................................... 73
Figure 44. Leverage of USDOE R&D Funding by GE Wind Energy.......................................... 74
Figure 45. Return on Investment of NREL Funds in GE Wind................................................... 74
List of Tables
Table 1. Summary of the Key Drive Train Design Parameters and Configurations Options......... 6
Table 2. Summary of Drivetrain Configurations Investigated........................................................ 7
Table 3. Proof of Concepts Turbine Configuration Description................................................... 42
Table 4. Summary of Required Airfoil Characteristics ................................................................ 51
Table 5. Test Equivalent Damage ................................................................................................. 56
Table 6. Engineering & Manufacturing Development Turbine Configuration ............................ 62
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