Model- Based Design of a Wind Turbine

1. Simulation Model Model-Based Design of a Wind Turbine Requirements andSpecifications Pitch Wind Blades Lift Geartrain Generator Hub HIL PLC Electrical Control EmbeddedSoftware Mechanical RotorSpeed Steve Miller Technical Marketing, Physical Modeling MathWorks Yaw Tower Grid http://www.mathworks.com/physical-modeling/

2. Key Points Simulation Model Requirements andSpecifications Control Electrical Mechanical EmbeddedSoftware • 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 PLC HIL Actuator(Ideal) System (Include) Inputs Actuator(Realistic) System (Ignore)

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 Pitch Requirements and Specifications Blades Geartrain Generator Hub Design and Implementation Electrical Control EmbeddedSoftware Mechanical Yaw Tower Integration and Test Grid

5. Traditional Development Process Requirements and Specifications Requirements are unclear, incomplete, and not integrated in design process Design and Implementation Electrical Control EmbeddedSoftware • Separate simulation models are difficult to integrate Mechanical Errors are found too late in the process using expensive prototypes Integration and Test

6. Model-Based Design Process Save time by developing in a single simulation environment Simulation Model Requirements andSpecifications PLC HIL Produce better designs by continuously comparing design and specification Electrical Control EmbeddedSoftware Mechanical Lower costs by using HIL tests and fewer hardware prototypes

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. Wind Turbine Req. 1. Control System 2. Electrical System 3. Mechanical System Linking Specification and Design Situation: Simulation Model Electrical Control EmbeddedSoftware Mechanical Problem:Matching design to specification is difficult Solution:Use SimulinkVerification and Validationto link the design and specification

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 Model: PitchCommand ActuatorForce Control CylinderExtension 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

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 Model: Drag Mechanical Controls Lift SupervisoryLogic Park Hydraulic Actuator(Ideal) System (Include) Inputs Spin Aero-dynamics Wind Electrical Problem:Test for system integration issues before building hardware prototypes Solution: Use the Simulink environment to integrate the separate systems in simulation 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 Situation: Test DesignChange Document EvaluateResults Problem:Evaluate test results quickly to make design changes and document the results Solution: Use Simulink Report Generator to automatically document tests and results PDF,HTML,Doc,…  Fail Pass

15. Key Points Simulation Model Requirements andSpecifications Control Electrical Mechanical EmbeddedSoftware • 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 PLC HIL Actuator(Ideal) System (Include) Inputs Actuator(Realistic) System (Ignore)