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1、 Project Name Demo_a Date 5 Sept 2001 Engineer EAB Notes Generic 2MW Offshore turbine Version 3.41 Project file p:\bladed\ demo_a.prj GENERAL CHARACTERISTICS OF ROTOR AND TURBINE Rotor diameter 80 m Number of blades 3 Teeter hinge No Hub height 61.5 m Off
2、set of hub to side of tower centre 0 m Tower height 60 m Tilt angle of rotor to horizontal 4 deg Cone angle of rotor 0 deg Blade set angle 0 deg Rotor overhang 3.7 m Rotational sense of rotor, viewed from upwind Clockwise Position of rotor relative to tower Upwind Aerodynam
3、ic control surfaces Pitch Fixed / Variable speed Variable Diameter of spinner 2.5 m Radial position of root station 1.25 m Extension piece diameter 1.9 m Extension piece drag coefficient 0.8 Cut in windspeed 4 m/s Cut out windspeed 25 m/s BLADE GEOMETRY Distance fro
4、m root (m) Chord (m) Twist (deg) Thickness (% chord) Pitch Axis (% chord) Aerodyn- amic control Aerofoil section reference 0.00 2.0667 13.00 100.0 50.00 Pitchable 1.000 1.148 2.0667 13.00 100.0 50.00 Pitchable
5、 1.000 3.444 2.7556 13.00 64.0 38.00 Pitchable 1.000 5.741 3.4444 13.00 40.0 29.00 Pitchable 1.000 9.185 3.4444 11.00 30.0 29.00 Pitchable 1.000 16.074 2.7556
6、 7.80 22.0 29.00 Pitchable 1.000 26.407 1.837 3.30 15.0 29.00 Pitchable 1.000 35.593 1.1482 0.30 11.5 29.00 Pitchable 1.000 38.233 0.6889 2.75 11.0 29.00 Pitch
7、able 1.000 38.75 0.0287 4.00 11.0 29.00 Pitchable 1.000 BLADE MASS DISTRIBUTION Distance from root (m) Centre of Mass (% chord) Mass/unit length (kg/m) 0.00 50.00 1084.77
8、 1.148 50.00 369.81 3.444 38.00 277.36 5.741 29.00 234.21 9.185 29.00
9、 209.56 16.074 29.00 172.58 26.407 29.00 103.55 35.593 29.00 55.47 38.233 29
10、00 40.68 38.75 29.00 24.65 Blade Mass Integrals (No ice) Blade Mass 6546.72 kg First Mass Moment 84218.7 kgm Second Mass Moment 1.785E+06 kgm² Blade inertia about shaft 2.006E+06 kgm² BLADE STIFF
11、NESS DISTRIBUTION Radial Position (m) Stiffness about Chord Line (Nm²) Stiffness perpendicular to Chord Line (Nm²) 0.00 7.472E+09 7.472E+09 1.148 2.433E+09 2.
12、607E+09 3.444 1.408E+09 2.085E+09 5.741 8.341E+08 1.425E+09 9.185 5.561E+08 1.286E+09
13、 16.074 2.085E+08 5.648E+08 26.407 2.954E+07 1.216E+08 35.593 2.259E+06 2.433E+07 38.233
14、 1.1382E+05 4.518E+06 38.75 3.128E+03 8.1675E+03 HUB MASS AND INERTIA Mass of hub 14000 kg Mass centre of hub 0 m Inertia of hub about LSS 12000 kgm² Total Rotor Mass 33640.2
15、kg Total Rotor Inertia 6.029E+06 kgm² TOWER DETAILS Station Number Height (m) Diameter (m) Mass/unit length (kg/m) Stiffness (Nm²) 1.000 -15.00 3.500 2935.71 2.46E+11 2.000 15.00 3.1923 22
16、14.09 1.43E+11 3.000 35.00 2.8846 1492.47 7.81E+10 4.000 50.00 2.7308 1131.66 5.65E+10 5.000 60.00 2.600 824.97 4.22E+10 Tot
17、al Tower Mass 143777 kg Total Turbine Mass 249417 kg Drag coefficient for tower 0.6 Environment Offshore Mean sea depth 10 m Hydrodynamic drag coefficient 1 Hydrodynamic mass coefficient 2 No movement of tower foundation Tower base translational motion? No Tower
18、base rotational motion? No NACELLE GEOMETRY Nacelle width 2.5 m Nacelle length 6 m Nacelle height 2.5 m Nacelle drag coefficient 1.6 NACELLE MASS Nacelle mass 72000 kg Nacelle centre of mass lateral offset 0 m Nacelle centre of mass above tower top 1.3 m Nace
19、lle centre of mass in front of tower axis -0.6 m Yaw inertia of nacelle 215000 kgm² Total Tower-head Mass 105640 kg Total Yaw Inertia: 0° azimuth 3.69E+06 kgm² Total Yaw Inertia: 90° azimuth 3.69E+06 kgm² DRIVE TRAIN Gearbox ratio 83.33 Generator inertia 60 kgm² Position
20、of shaft brake High speed shaft (Gearbox End) Low speed shaft Flexible Low speed shaft torsional stiffness 1.6E+08 Nm/rad Low speed shaft torsional damping 1.E+07 Nms/rad High speed shaft Stiff GENERATOR CHARACTERISTICS Generator model Variable Speed Power electronics ti
21、me constant 0 s Maximum generator torque 14400 Nm Minimum generator torque 0 Nm Phase Angle 0 deg ELECTRICAL NETWORK Network voltage 11000 V Connecting line resistance 0 ohms/phase Connecting line inductance 0 ohms/phase Network resistance 0.01 ohms/phase Network induct
22、ance 0.01 ohms/phase Total number of turbines 1 MECHANICAL LOSS TORQUE (kNm, referred to low speed shaft) Low speed shaft torque (kNm) Loss torque (kNm) 0.0 23.00 960.0
23、 37.00 1280.0 49.00 ELECTRICAL LOSSES No load power loss 0 kW Efficiency 95 % POWER PRODUCTION CONTROL Variable Speed Pitch Regulated Controller Dynamic Minimum generator speed 850 rpm Maximum gene
24、rator speed 1800 rpm Optimal mode quadratic speed-torque gain 0.24 Nms²/rad² Optimal mode maximum generator speed 1500 rpm Generator torque set point 13403 Nm Above-rated generator speed set-point 1500 rpm Minimum pitch angle -2 deg Maximum pitch angle 90 deg Pitch direction
25、to Feather Speed transducer time constant 0 s Power transducer time constant 0 s Maximum negative pitch rate -8 deg/s Maximum positive pitch rate 8 deg/s PI torque control of speed Proportional gain 500 Nms/rad Integral gain 250 Nm/rad Desaturation time constant 0 s Gain
26、 schedule (gain divisor) Constant value 1 PI pitch control of speed Proportional gain 0.0246 s Integral gain 0.01025 Desaturation time constant 0 s Gain schedule (gain divisor) Look-up table based on pitch Pitch (rad) Gain divisor -0.0524
27、 1.000 0.000 1.000 0.5236 3.000 1.000 3.000 PITCH A
28、CTUATOR Pitch actuator responds to Position demand Ramp control for step changes in input: Disabled Pitch position response Passive First order lag time constant 0.3 s Pitch actuation Collective TURBINE START-UP CALCULATION Rotor speed at start of simulation 0 rpm Pitc
29、h angle at start of simulation 90 deg Pitch rate for start-up -5 deg/s Generator speed at which it is connected to grid 850 rpm Final pitch angle -2 deg NORMAL STOP CALCULATION Pitch rate for stopping 5 deg/s Final pitch angle 90 deg Rotor speed for parking brake application
30、 0.5 rpm EMERGENCY STOP CALCULATION Emergency pitch trip mode Grid loss Emergency pitch rate 12 deg/s Final pitch angle 90 deg Emergency brake trip mode Overspeed Overspeed trip for brake application 22 rpm Rotor speed for parking brake application 0.5 rpm SHAFT BRAK
31、E CHARACTERISTICS Maximum brake torque 12000 Nm Shaft brake ramp time 1 s IMBALANCES AND FAILURE MODES Out of balance mass 135 kg Radius of out of balance mass 1 m Azimuthal position of out of balance mass 0 deg Blade Error in Blade Set Angle (deg) Error in Pitch Angle (deg
32、) Error in Blade Azimuth (deg) Pitch Status Pitch Fail Angle (deg) 1.000 0.0000 0 0 OK 2.000 -0.3000 0 0 OK 3.000 0.3000 0 0 OK MODAL ANALYSIS FOR ROTOR Number of out of
33、 plane bending modes 3 Mode 1 damping coefficient .01 Mode 2 damping coefficient .01 Mode 3 damping coefficient .01 Number of in-plane bending modes 3 Mode 1 damping coefficient .01 Mode 2 damping coefficient .01 Mode 3 damping coefficient .01 Pitch
34、angle 1 -2 deg Pitch angle 2 20 deg Pitch angle 3 90 deg Rotor speed 18 rpm Hub rotation Free MODAL ANALYSIS FOR TOWER Number of fore-aft tower modes 2 Mode 1 damping coefficient .005 Mode 2 damping coefficient .005 Number of side-side tower modes 2 Mode
35、 1 damping coefficient .005 Mode 2 damping coefficient .005 Rotor azimuth angle 0 deg MODAL ANALYSIS Hub rotation Free Rotor modes at -2.0 degrees pitch Mode Frequency at 18.0 rpm (Hz) Non-rotating frequency (Hz) Damping factor Edgewise root slope Out of plane 1
36、 1.044 0.964 0.0100 0.0000 Out of plane 2 1.044 0.964 0.0100 0.0000 Out of plane 3 1.044 0.964 0.0100 0.0000 In plane 1 1.502
37、 1.456 0.0100 0.0000 In plane 2 1.502 1.456 0.0100 0.0000 In plane 3 3.166 3.103 0.0100 -0.0191 Rotor modes at 20.0 degrees pitch Mode Frequency at 18.0 rpm (Hz) Non-r
38、otating frequency (Hz) Damping factor Edgewise root slope Out of plane 1 1.166 1.098 0.0100 0.0000 Out of plane 2 1.166 1.098 0.0100 0.0000 Out of plane 3 1.166 1.098
39、 0.0100 0.0000 In plane 1 1.422 1.372 0.0100 0.0000 In plane 2 1.422 1.372 0.0100 0.0000 In plane 3 2.977 2.910 0.0100 -0.0192
40、 Rotor modes at 90.0 degrees pitch Mode Frequency at 18.0 rpm (Hz) Non-rotating frequency (Hz) Damping factor Edgewise root slope Out of plane 1 1.499 1.452 0.0100 0.0000 Out of plane 2 1.499 1.452 0.01
41、00 0.0000 Out of plane 3 1.499 1.452 0.0100 0.0000 In plane 1 1.049 0.969 0.0100 0.0000 In plane 2 1.049 0.969 0.0100 0.0000 In plane
42、3 1.875 1.760 0.0100 -0.0141 Tower modes Rotor azimuth angle 0 deg Mode Frequency (Hz) Damping factor Tower top slope Fore-aft 1 0.472 0.0050 0.024 Fore-aft 2 3.201
43、 0.0050 1.8033 Side-side 1 0.470 0.0050 0.0242 Side-side 2 2.885 0.0050 -9.0419 TOWER SHADOW Tower shadow model Potential Flow Fraction of tower diameter to use 1 VERT
44、ICAL WIND SHEAR Wind shear model Exponential Wind shear exponent 0.2 TIME DEPENDENT WIND FIELD Wind model type Turbulent Wind Wind speed defined at hub height Mean wind speed for simulation 12 m/s Turbulent wind field height: best fit for rotor and tower Wind directi
45、on from North 0 deg Wind direction transient Half wave Amplitude of transient 0 deg Start time of transient 0 s Duration of transient 0 s Flow inclination 8 deg Longitudinal turbulence intensity 16.0108 % Lateral turbulence intensity 12.5465 % Vertical turbulenc
46、e intensity 8.92472 % Interpolation scheme Cubic Turbulence Characteristics: p:\bladed\userint\demo_a.wnd Number of lateral grid points 15 Number of vertical grid points 15 Width of turbulent wind field 100 m Height of turbulent wind field 100 m Length of turbulent wind field
47、 1804.8 m Along-wind step size of turbulent wind field 0.88125 m Mean wind speed for turbulence calculation 12 m/s Random number seed 1 Spectrum type: von Karman (Improved) Number of turbulence components: 3 Latitude 49.9999 deg Hub height 61.5 m Surface roughness length
48、 0.1 m Longitudinal length scale of longitudinal component 244.67 m Lateral length scale of longitudinal component 79.6605 m Vertical length scale of longitudinal component 59.2508 m Longitudinal length scale of lateral component 58.868 m Lateral length scale of lateral component 76.6
49、657 m Vertical length scale of lateral component 28.5117 m Longitudinal length scale of vertical component 21.1883 m Lateral length scale of vertical component 13.7971 m Vertical length scale of vertical component 20.5243 m WAVES Spectrum: Pierson-Moskowitz Peak spectral
50、period 8 s Significant wave height 3 m Wave direction from North 0 deg Random number seed 1 CURRENTS Near-surface currrent Yes Mean wind speed at 10 m 25 m/s Current direction from North 0 deg Sub-surface currrent No Near-shore currrent No WIND TURBULEN
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客服电话：4009-655-100 投诉/维权电话：18658249818
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