1 © 2011 the mathworks, inc. model-based design of a wind turbine steve miller technical marketing,...
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1© 2011 The MathWorks, Inc.
Model-Based Design of a Wind Turbine Steve Miller
Technical Marketing, Physical Modeling
MathWorks
http://www.mathworks.com/physical-modeling/
Grid
Pitch
Yaw
RotorSpeed
Blades
Tower
Geartrain GeneratorHub
Lift
Wind
Simulation Model
MechanicalEmbeddedSoftware
Requirements and
SpecificationsControl Electrical
PLC HIL
2
Actuator(Ideal)
InputsSystem
(Include)
Key Points
Efficient design of wind turbinesrequires a smooth, continuousdevelopment process
The ability to easily adjustthe level of model fidelityenables earlier detection ofintegration issues
Automatically documentingtests can speed up designiterations and provide necessaryproof of system performance
Actuator(Realistic)
System(Ignore)
Simulation Model
MechanicalEmbeddedSoftware
Control Electrical
PLC HIL
Requirements and
Specifications
3
Agenda
Overview of wind turbine model Benefits of the Model-Based Design process Linking requirement documents and simulation model Determining more detailed requirements Testing system integration Automatically performing and documenting tests
4
Traditional Development Process
Design and Implementation
MechanicalEmbeddedSoftware
Integration and Test
Control Electrical
Requirements and Specifications
Grid
Pitch
Yaw
Blades
Tower
Geartrain GeneratorHub
5
Traditional Development Process
Design and Implementation
MechanicalEmbeddedSoftware
Integration and Test
Requirements are unclear, incomplete, and not integrated in
design process
Separate simulation models are difficult
to integrate
Errors are found too late in the process using expensive
prototypes
Control Electrical
Requirements and Specifications
6
Model-Based Design Process
Simulation Model
MechanicalEmbeddedSoftware
Requirements
andSpecifications
Save time by developing in a single
simulation environment
Control Electrical
Produce better designs by continuously
comparing design and specification
Lower costs by using HIL tests and fewer hardware prototypes
PLC HIL
7
Agenda
Overview of wind turbine model Benefits of the Model-Based Design process Linking requirement documents and simulation model Determining more detailed requirements Testing system integration Automatically performing and documenting tests
8
Linking Specification and Design
Problem: Matching design tospecification is difficult
Solution: Use SimulinkVerification and Validation to link the design and specification
Situation:Simulation Model
MechanicalEmbeddedSoftware
Control Electrical
Wind Turbine Req.1. Control System
2. Electrical System
3. Mechanical System
9
Agenda
Overview of wind turbine model Benefits of the Model-Based Design process Linking requirement documents and simulation model Determining more detailed requirements Testing system integration Automatically performing and documenting tests
10
Determine Pitch Actuator Requirements
Problem: Determine the performance requirements for the pitch actuator (force and speed)
Solution: Use an ideal actuator and a controller to model the pitch system
Model:
PitchCommand
ActuatorForce
CylinderExtension
Control
11
Agenda
Overview of wind turbine model Benefits of the Model-Based Design process Linking requirement documents and simulation model Determining more detailed requirements Testing system integration Automatically performing and documenting tests
12
Detect System Integration IssuesIn Simulation
Problem: Test for system integration issues before building hardware prototypes
Solution: Use the Simulink environment to integrate the separate systems in simulation
Model:
Mechanical
Hydraulic
Electrical
Controls
Park
Spin
SupervisoryLogic
LiftDrag
Wind
Aero-dynamics
Actuator(Ideal)
InputsSystem
(Include)
Actuator(Realistic)
System(Ignore)
13
Agenda
Overview of wind turbine model Benefits of the Model-Based Design process Linking requirement documents and simulation model Determining more detailed requirements Testing system integration Automatically performing and documenting tests
14
Automatically DocumentTests And Results
Problem: Evaluate test results quickly to make design changes and document the results
Solution: Use Simulink Report Generator to automatically document tests and results
Situation:
DesignChange
Test
EvaluateResults
Document
PDF,HTML,Doc,…
Fail
Pass
15
Actuator(Ideal)
InputsSystem
(Include)
Key Points
Efficient design of wind turbinesrequires a smooth, continuousdevelopment process
The ability to easily adjustthe level of model fidelityenables earlier detection ofintegration issues
Automatically documentingtests can speed up designiterations and provide necessaryproof of system performance
Actuator(Realistic)
System(Ignore)
Simulation Model
MechanicalEmbeddedSoftware
Control Electrical
PLC HIL
Requirements and
Specifications