Turbine Definition
The main toolbar gives access to data entry screens which allow the various turbine components to be defined.
Turbine Definition
The main toolbar gives access to data entry screens which allow the various turbine components to be defined, including:
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- Rotor
- Blades
- Drive Train
- Generator & Electrical
- Control
- Tower & Nacelle
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Rotor
The overall configuration of the rotor and hub can be defined, including:
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- Tilt and cone angles
- 1, 2 or 3 blades
- Fixed or teetered hub
- Upwind or downwind orientation
- Clockwise or anticlockwise rotation
- Rotor mass, geometric and pitch imbalances
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Blades
The blade geometrical, aerodynamic and structural (mass and stiffness) properties can be defined, including:
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- Full or partial span pitch or aileron control
- Blade sweep and pre-bend
- Comprehensive aerofoil interpolation
- Blade vibration dynamics
- Model for iced blades
- Blade vibration dampers
- Encryption facility for blade and aerofoil data
- Aerodynamic model uses blade element momentum theory with dynamic inflow and stall hysteresis, and full aeroelastic feedback from structural motions
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Drive Train
Various transmission configurations are supported, including:
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- Stiff or torsionally flexible shafts
- Geared and direct drive layouts
- Flexible mountings on gearbox or pallet
- Alternative shaft brake positions
- Slipping clutch
- Mechanical losses from look-up tables
- User specified shaft brake characteristics
- User-specified gearbox dynamics
Please click here to read more about the Advanced Transmission Interface module.
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Generator & Electrical
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- Fixed speed and two-speed induction
- Variable speed and variable slip models
- Electrical model for voltage variations and network interactions
- Calculation of network voltage variations and flicker
- Range of electrical loss models
- User-specified electrical system dynamics
Please click here to read more about the Advanced Transmission Interface module.
Please click here to read more about the Electrical Dynamics module.
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Control
Bladed includes a comprehensive model of the control system, allowing detailed modelling of power production control, supervisory control and safety system response, including the response to turbine faults
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- Stall, pitch or aileron control
- Collective or independent pitch
- Fixed or variable speed
- Transducer dynamics
- Parked, idling, start-up, shutdown and power production simulations
- Built in PI controllers with gain scheduling, and supervisory control functions
- All turbine control functions can be fully user-defined through interface to MS Windows DLL
- Example controller DLL source code provided in FORTRAN, C and Visual Basic
- Comprehensive pitch actuator models
- Rotary and linear pitch drives
- Load-dependent pitch bearing friction
- Linearisation module generates state-space models for controller design
Please click here to read more about the Linearisation module.
Please click here to read more about the Hardware Test module.
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Tower & Nacelle
The geometrical and structural properties of onshore and offshore towers can be defined, to model the effects of:
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- Tower dynamics, fore-aft and side to side
- Yaw dynamics and yaw bearing friction
- Foundation flexibility
- Wind loading, including aeroelastic feedback
- Wave and current loading, including hydrodynamic drag and inertia effects
Using the Offshore Support Structure module, multiple-member, space-frame support structures can be designed and analysed. Please click here to read more about the Offshore Support Structure module.
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