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

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Figure 31. POC Turbine Rotor Being Installed Figure 32. POC Turbine Installed in Tehachapi, California 57
3.2.1 Power Performance Testing of the POC Turbine Power performance testing was conducted on the POC turbine between February 9, 2001 and March 21, 2001. A total of 265 hours of data with wind out of the acceptable wind directions (295° to 335°) and with the turbine available was collected during that time. Figure 33 compares the measured and theoretical power curves. Power (kW) 1800 1600 1400 1200 1000 800 600 400 200 0 Theoret ical E GEWE nron 2/ Measured 6-21/ 01 P NREL reliminar Measured y NREL 0 5 10 Wind Speed 15 20 Figure 33. Comparison of Theoretical and Measured POC Power Curves 3.2.2 Power Quality Testing of the POC Turbine Power Quality testing of the POC turbine was conducted between May 31, 2001 and June 25, 2001. A total of 973 hours of data were collected while the turbine was available, but only 315 hours of data was recorded during 10-minute intervals during which the turbulence intensity was between 8% and 16%, as required by the IEC 61400-21 Power Quality Standard. The testing consisted of a long-term phase and a short-term phase, conducted between 31 May and 9 June. The tests conducted as part of the power quality testing were: • Maximum measured power (60-second and 0- and 2-second), reactive power demand • Turbine start and stop tests • Voltage fluctuations (flicker) • Current imbalance measurements • Voltage and current harmonics. The results of the testing indicated no power quality problems for the POC turbine. 3.2.3 Mechanical Loads Testing of the POC Turbine Mechanical loads testing was conducted on a production GE1.5/70 turbine installed in a wind farm at Desert Sky, Texas. Loads were determined to be acceptable. 58
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National Renewable Energy Laborator
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NOTICE This report was prepared as
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Abstract This document reports the
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In addition to innovations resultin
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3.2.3 Mechanical Loads Testing of t
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List of Symbols and Abbreviations A
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The SOW also stipulates that GE see
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2.1 Electromechanical Systems Conce
Page 17 and 18: Table 1. Summary of the Key Drive T
Page 19 and 20: 2.1.1 Conventional-Speed Generators
Page 21 and 22: other than the wound rotor inductio
Page 23 and 24: offer compelling advantages to COE.
Page 25 and 26: cluded that the same would likely b
Page 27 and 28: cannot be designed for unity power
Page 29 and 30: Figure 5. Fatigue Damage Equivalent
Page 31 and 32: 2.3 Rotor and Structural Design Con
Page 33 and 34: 2.3.1.1 Upwind Rotor Blade and Towe
Page 35 and 36: Percent Change in Load Percent Chan
Page 37 and 38: the other three combinations of rot
Page 39 and 40: Percent Reduction in Component of F
Page 41 and 42: Design rules were used to estimate
Page 43 and 44: formed using the baseline rotor des
Page 45 and 46: duce an average flapwise deflection
Page 47 and 48: would be to reduce the COE by reduc
Page 49 and 50: 2.3.5 Boundary Layer Control GE com
Page 51 and 52: Perhaps the most important outcome
Page 53 and 54: Table 3. Proof of Concepts Turbine
Page 55 and 56: Figure 16. Schematic of the Proof o
Page 57 and 58: • Measure thermal characteristics
Page 59 and 60: Figure 21. POC Drive Train on the N
Page 61 and 62: • The lift and drag characteristi
Page 63 and 64: Figure 24. NGT POC Airfoil Family F
Page 65 and 66: One of the prototype blades was ini
Page 67: least 20 years of equivalent loadin
Page 71 and 72: Maxi mum Ti p Speed (m/s) Sound Pow
Page 73 and 74: Table 6. Engineering & Manufacturin
Page 75 and 76: GE briefly considered the costs and
Page 77 and 78: Figure 38. EMD 37-m (GE37a) Blade 6
Page 79 and 80: Development of the concept required
Page 81 and 82: Bench tests verified PLC control mo
Page 83 and 84: 4.3.2 Mechanical Loads Testing of t
Page 85 and 86: 5 Commercialization of GE NGT Techn
Page 87: F1146-E(12/2004) REPORT DOCUMENTATI
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