an integrated wind turbine design toolan integrated...
TRANSCRIPT
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS5An Integrated Wind Turbine Design Tool
FOCUS5An Integrated Wind Turbine Design Tool
N.P. DuineveldN.P. Duineveld
Sandia 2008 Blade WorkshopSandia 2008 Blade Workshop
Tuesday May 13Tuesday May 13thth, 2008, 2008
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WMC Knowledge CentreWind turbine Materials and Constructions
OutlineOutline
General Introduction Turbine Design Blade Design Future Development
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS, an integrated wind turbine design tool
IntroductionIntroduction
Novem project 224.720.9535: FOCUS version 4Novem project 224.720.9635: Windows-95 interface for FOCUS4
FOCUS 5: Internal development
SenterNovem project: 2020-04-11-10-003: FOCUS 6 (2004-2008)
INNWIND - Innovation in Wind Energy (2006-2011)
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WMC Knowledge CentreWind turbine Materials and Constructions
Main FeaturesMain Features
Wind turbine design Detailed blade design Load set calculation according to international standards (IEC,
GL, DNV) Design load sets calculated and blade structural analyses
results are accepted for certification Fatigue and strength analysis based on stress/strain time
series World wide used by main players in industry Focus is also applied for many years in both national and
international research projects Open architecture Support of external formats Graphical analysis of results Integrated help system
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WMC Knowledge CentreWind turbine Materials and Constructions
Focus flow chartFocus flow chart
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WMC Knowledge CentreWind turbine Materials and Constructions
Aero elastic simulatorAero elastic simulator
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WMC Knowledge CentreWind turbine Materials and Constructions
Aero Elastic Simulator (Phatas)Aero Elastic Simulator (Phatas)
Simulation of non-linear structural and aerodynamic response of the complete wind turbine in time domain developed by ECN.
The simulation includes full interaction between aerodynamic loads, structural deformations and controller response.
Is suitable for pitch-to-vane controlled variable-speed turbines
Accurate modal response model for tower and blades, including blade torsion
Geometric non-linear model for blade bending
Optional linkage of tower substructure exported from general purpose FEM package is possible
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WMC Knowledge CentreWind turbine Materials and Constructions
Aero Elastic Simulator (Phatas)Aero Elastic Simulator (Phatas)
Analyses of the aerodynamic rotor characteristics
Power curve calculations
Built-in advanced PD controller, custom PD controllers can be linked
Modeling of operational states of the turbine like starts and stops and emergency conditions
Detailed modeling options of deterministic wind conditions
Option to apply stochastic wave loading
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS GUIPhatas
FOCUS GUIPhatas
(Click image below to start video)
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WMC Knowledge CentreWind turbine Materials and Constructions
Load Case PreProcessorLoad Case PreProcessor
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WMC Knowledge CentreWind turbine Materials and Constructions
Load Case PreProcessorLoad Case PreProcessor
The LoadCase PREProcessorLCPREP is provided for automatic generation of load case input files following IEC-2 and GL or IEC-3.
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS GUILoad Case PreProcessor
FOCUS GUILoad Case PreProcessor
Load case definition
smgershTypewritten Text(Click image below to start video)
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WMC Knowledge CentreWind turbine Materials and Constructions
3D Wind Field Generator 3D Wind Field Generator
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WMC Knowledge CentreWind turbine Materials and Constructions
Wind Simulator (SWIFT)Wind Simulator (SWIFT)
SWIFT Simulation of Wind Fields in Time
A full field of three-component turbulent wind is generated for variable speed wind turbines
The discrete time history of the wind speed in wind direction are calculated at nodal points on the rotor plane.
SWIFT is compatible with the commonly applied standards for wind turbine design: IEC, GL and DNV.
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS GUI3D wind definition (Swift)
FOCUS GUI3D wind definition (Swift)
(Click image below to start video)
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WMC Knowledge CentreWind turbine Materials and Constructions
Post-processingTime series turbine simulation
Post-processingTime series turbine simulation
Load case GL 4.2 Normal stop, Extreme Operating Gust (EOG) at Vout
Vhub
Generator shaft power
Rotor speed
Axial force shaft
Pitch angle blade 1
0 10 20 30 40 50 60 70 80 9020
22
24
26
28
30
32
34
time [s]
Sig
nal=
2
Wind speed hub [m/s]
PHATAS IV model:Demo2MW Date: 21-01-2008Load case: 4280 Description: STOP_EOG1_cutout
0 10 20 30 40 50 60 70 80 900E3
1000E3
2000E3
3000E3
4000E3
time [s]
Sig
nal=
5
Generator shaft power [W]
0 10 20 30 40 50 60 70 80 900
5
10
15
20
25
time [s]S
igna
l=12
Rotor speed [rpm]
0 10 20 30 40 50 60 70 80 90
-100000
0
100000
200000
300000
time [s]
Sig
nal=
64Axial (compressive) force on shaft. [N]
0 10 20 30 40 50 60 70 80 900
20
40
60
80
100
time [s]
Sig
nal=
104
Blade 1: Pitch angle. [deg]
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WMC Knowledge CentreWind turbine Materials and Constructions
Post-processingPower curve
Post-processingPower curve
Pgenerator
Rotor speed
Cpaero
Pitch angle
Axial Force
2 4 6 8 10 12 14 16 18 20 220E3
400E3
800E3
1200E3
1600E3
2000E3
Wind speed [m/s]
P_ge
n[W
]
Demo2MW
PHATAS IV model:Demo2MW Date: 21-01-2008
2 4 6 8 10 12 14 16 18 20 22
10
12
14
16
18
20
Wind speed [m/s]
roto
r spe
ed [r
pm] Demo2MW
2 4 6 8 10 12 14 16 18 20 220.00
0.10
0.20
0.30
0.40
Wind speed [m/s]Cp
_aer
o [-]
Demo2MW
2 4 6 8 10 12 14 16 18 20 220
4
8
12
16
Wind speed [m/s]
Pitc
h_an
gle1
[deg
]
Demo2MW
2 4 6 8 10 12 14 16 18 20 22
40000
80000
120000
160000
200000
Wind speed [m/s]
Axia
l forc
e [N
]
Demo2MW
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WMC Knowledge CentreWind turbine Materials and Constructions
External linksExternal links
External controller DLL can be linked to Phatas
Native Phatas API
Bladed API
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS5Blade design
FOCUS5Blade design
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WMC Knowledge CentreWind turbine Materials and Constructions
Blade modellingBlade modelling
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS blade designFOCUS blade design
1. Define the profiles of the blade2. Define position of profiles in the
blade
3. Define lines through the profiles4. Define materials5. From lines and radii + materials:
define sections (sheets of material)
6. Select load cases7. Run
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WMC Knowledge CentreWind turbine Materials and Constructions
Profile definitionProfile definition
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0.25
0 0.2 0.4 0.6 0.8 1 1.2
Normalized shape
# of points constant for the whole blade
Closed profiles
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS shape toolFOCUS shape tool(Click image below to start video)
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WMC Knowledge CentreWind turbine Materials and Constructions
Use of profile files in blade definitionUse of profile files in blade definition
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WMC Knowledge CentreWind turbine Materials and Constructions
From profiles to blade shapeFrom profiles to blade shape(Click image below to start video)
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WMC Knowledge CentreWind turbine Materials and Constructions
Lines definitionLines definition
Lines are defined as 2 points : Radius % chord Offset mm //chord Offset along //profile Offset chord
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WMC Knowledge CentreWind turbine Materials and Constructions
Define material propertiesDefine material properties
Define materials by:
Type
Isotropic
Orthotropic
Core
Partial material factors according to GL
Additional material properties can be set for export to FEM
Material dependent S-N line data (like slope)
For fatigue analysis
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WMC Knowledge CentreWind turbine Materials and Constructions
Define fatigue formulationDefine fatigue formulation
Goodman & S-N lines defined by user defined equations
GRP Goodman diagram according to GL2003
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WMC Knowledge CentreWind turbine Materials and Constructions
Define SectionsDefine Sections
Give radii and lines for each sheet of material
Sequence: start from the mold, as in the production
UD
R=750+v
Foam
R=750+v
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WMC Knowledge CentreWind turbine Materials and Constructions
Blade Eigen frequencies/modesBlade Eigen frequencies/modes
Coupled eigen frequencies/modes calculated by Focus
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WMC Knowledge CentreWind turbine Materials and Constructions
Blade Structural analysesBlade Structural analyses
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WMC Knowledge CentreWind turbine Materials and Constructions
Load case selectionLoad case selection
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WMC Knowledge CentreWind turbine Materials and Constructions
Run Blade design analysisRun Blade design analysis
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WMC Knowledge CentreWind turbine Materials and Constructions
Blade structural analysesFatigue Results
Blade structural analysesFatigue Results
Fatigue damage (life based) Fatigue reserve factor (strength based) Stress spectra
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WMC Knowledge CentreWind turbine Materials and Constructions
Blade Buckling/FINSTRIPBlade Buckling/FINSTRIP
Cross section based buckling analyses
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WMC Knowledge CentreWind turbine Materials and Constructions
Post ProcessingPost Processing
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WMC Knowledge CentreWind turbine Materials and Constructions
Post-processing featuresPost-processing features
Plot the structural data of the blade
Plot load-time sequences, load spectra andspectral density plots
Plot the PHATAS simulation variables
Plot stress-spectra
View the FAROB model with the 3D-Viewer
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WMC Knowledge CentreWind turbine Materials and Constructions
External linksExternal links
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WMC Knowledge CentreWind turbine Materials and Constructions
External linksExternal links
FOCUS Load file format is standardized and made public for external program use.
Load files can be exported to ASCII
Load file import from Flex5/6 and Bladed
FOCUS can convert the blade model into FE mesh
MSC.MARC MSC.Nastran ANSYS
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WMC Knowledge CentreWind turbine Materials and Constructions
Focus generated FE meshFocus generated FE mesh
MSC.MARC, MSC.Nastran and ANSYS
Thick shell elements Geometry Materials Full ply lay-up
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WMC Knowledge CentreWind turbine Materials and Constructions
Sample Nastran analysesSample Nastran analyses
Nastran modal analyses with Focus generated FE mesh
First flap mode Second flap mode
(Click image below to start video) (Click image below to start video)
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WMC Knowledge CentreWind turbine Materials and Constructions
FOCUS GUI Help systemFOCUS GUI Help system
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WMC Knowledge CentreWind turbine Materials and Constructions
New developmentsFOCUS6/INNWINDNew developmentsFOCUS6/INNWIND
Turbine definition
Bladestructure
Towerstructure
ExternalConditions
Stoch./det.Wave
simulator
Stoch./det.Wind
simulator
Waves WindField
FAROBPre
Aero-elasticsimulator
Turbine database
Airfoilcoordinates
Airfoilcoefficients
ATG
Structuralloads
FAROBStructuralanalyses
SILANTCapitalCosts
functions
StructuralReserve factors
NoiseEmission
CapitalCosts
Perfor-mance
Design check
DesignOK?
AdaptDesign
Optimizeddesign
New optimization cycle
yn
Newmodule
DataStorage
Enhanced existingmodule
Newmodule
DataStorage
Enhanced existingmodule
2004-2011: SenterNovem projects New user interface with a database back-end
Linear and non-linear wave generator for offshore
Aerodynamics table generator
Internal finite element solver for rotor blade calculations
Generic cost module for capital turbine costs
Turbine optimization tool
SILANT, turbine noise emission tool
Structural analyses support structures (offshore applications)
Improvement of the PHATAS tower modelPHATAS
Option to perform load set calculations on a grid of computers to reduce turnaround time significantly.
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WMC Knowledge CentreWind turbine Materials and Constructions
Thanks!Thanks!