Development of an innovative Wind
Energy Concept with SIMPACK
Homan Seyedin, Frank Richert
User Meeting 2011
Salzburg
Company profile
New
o Project development wind energy
o Technical operation of wind turbines
Development of
Wind power plants
12.05.2011
Conditon monitoring
of WEC
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Maintenance of WEC
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Aim of the Company
o Development of Renewable Power Plants (RPP)
consists out of several Wind Energy Converter
(WEC) from view of an operator
o Design, assembly and operation of WEC prototypes
o Assist serial production of WEC
o Licensing
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RPP Development
Aim
o 3.4 MW WEC also usable for difficult to access sides
o Universal platform for different drive train concepts
o Grouping of single WEC to power plants (RPP)
o Minimization of Cost of Energy
Strategy
o System simplification through WEC clustering
o Avoid external cranes for installation and maintenance
o Optimization of size and mass of components
o Simplification of service and maintenance
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SkyWind Conzept
Usage of tower as crane (SkyLift)
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Renewable Power Plant
Cluster of WECs
Cluster power or grid unit
RPP
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SkyWind Conzept
o SkyWind 3.4
o Energy Converter
o SkyFormer
o Grid Connection System
o SkyControl
o Cluster Control
o SkyMount
o Installation System for Tower and SkyLift
o SkyLift
o Lift System for Service and Maintenance purposes
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SkyWind Conzept
Swing-angle
Rotor axis
Rotor axis
WEC with control of elastic cuppling to tower (SkySwing)
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SkyWind 3.4 Design
SkyCarrier
SkyLift
SkySwing
SkyHub
SkyBlade
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SkyGear
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SkyGen
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Development tools
How can we develop such an new and complex system ?
Challenge is to calculate the dynamic behavior of the
complete system:
• Aerodynamics of rotor blade
• Gearbox
• Generator
• Swing system
• Converter
• Control system
“Specialized” software for wind turbine development like
Bladed or Flex5 offer advantages in terms of supporting a
“smooth” certification process, but are more or less limited
to existing technical solution
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Wind Turbine Application Areas
Plastic Deformation,
Abuse
large
Amplitude of
Simulation
Static
KISSsoft
LVR
LDP
Romax
Bearinx
Basic
Simplified
Dynamics
Load
Other
Generation
Bladed
Flex5
FAST
Extreme Load Cases
Emergency Stop, Short circuit, 50
year wind gust
MBS
Basic
Drivetrain
Dynamics
Torsional
Drivetrain
Dynamics
Three Dimensional
Bearings
Gearwheels Flexible
Shafts
small
Detailed
Drivetrain
Dynamics
Gear Teeth
Meshing
Frequencies
Acoustics
Brakes
Harmonics of
Gear Teeth
Acoustics
Meshing
(e.g.
Brakes,
Frequencies
Hydraulics)
Romax (linear dynamics)
low
Frequency of Simulation
high
as Key Tool in WEC Design
Rotor aerodynamics
BET as implemented
or external code
Matlab/Simulink
Electrical system
Generator and grid
behavior
External Control System
as DLL user routine
Siemens NX and Nastran
Construction and FEM
Understanding of
dynamic behavior of
complete system
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Loads from load cases
according to certification body
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Model Topology
Rotorblade1
Pitch-Bearing1
Gamma
(about z)
0 DOF
Sky Hub
Pitch-Bearing
2
Rotorblade 2
Pitch Regler
Main Bearing
Sky GEN
Sky Gear
Alpha
(about x)
Alpha
(about x)
Generator Controler
0 DOF
Hub Carrier
6DoF
Carrier Interface
Nacelle Interface
Turbine Carrier
1DoF: Gamma
(about z)
0 DOF
Yaw-Bearing
Tower (Flexible Body) Steel-Part
0 DOF
Tower (Flexible Body) Concrete-Part
0 DoF
Foundation
6 DOF
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FE 43:Bushing
Cx, Cy, Cz
Calpha, Cbeta, Cgamma
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Simulation Results
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Co-Simulation “SIMAT”
Drivetrain reaction
Free
Wheeling
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Grid
Connect
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Summary
• “State of the art” simulates existing wind turbines with MBS software to
understand the behavior of the turbine
• To design and evaluate new concepts efficiently, the complete system needs
to be simulated with different levels of model quality
• Due to a combination of elastic components, need for accurate
representation of rotor aerodynamics, need for specialized control
mechanism and generator/grid behavior, simulation of an RPP system
requires a flexible MBS software with excellent interfaces to other
codes/routines etc.
• First simulations show the potential of SIMPACK to support the
understanding of new WEC concepts and support a efficient design process
• Due to the great number of load cases which need to be calculated, model
quality has to be adjusted according to calculation time
• Post processing capabilities of SIMPACK could be improved  SIMPACK 9.0
?
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Thank your for your attention
GmbH
Vorwerksallee / Vorwerk 5
24782 Büdelsdorf
www.skywind.de
mailto@skywind.de
+49 4331 436 22 -0