Dfig
As the importance of environmental protection and sustainable growth increases, wind energy, a clean and renewable energy, attracts increasing attention. The doubly-fed induction generator (DFIG)-based wind power system is one of the main wind turbine systems because of the system’s ability to improve wind power system efficiency and to reduce costs. Designing and researching more effective controllers for this system is a hot topic. This article introduces the doubly-fed wind power system and describes how the LabVIEW Control Design and Simulation Module can help you design controllers for this complex system.
Table of Contents 1. Introduction to a Wind Power System 2. LabVIEW Control Design and Simulation Module – A Tool to Research and Study the Wind Power System 3. Controller Design and Verification 4. Examples of Controller Design and Verification 5. Conclusion 6. Reference
Downloads
Introduction to a Wind Power System
The following figure shows the main components of a wind power system.
Figure 1. A Wind Power System and its Main Components
The main components of this system are the wind turbine, the mechanical drive train, the generator, the power grid, and the controller. The wind turbine converts the kinetic energy of the wind into mechanical energy. The generator converts the mechanical energy into electrical energy. The controller is the “brain” of the system. It ensures that the whole system works as expected.
The mechanical power Pmech is extracted from the wind. The following formula describes Pmech:
Pmech = 0.5 ρπR2v3Cp(λ,Ѳ) where Pmech is the mechanical power ρ is the air density R is the turbine’s radius v is the wind speed Cp is the power coefficient λ is the tip speed ratio Ѳ is the pitch angle λ is defined as:
where ωm is the turbine rotation speed R is the turbine’s radius v is the wind speed
The
Table of Contents 1. Introduction to a Wind Power System 2. LabVIEW Control Design and Simulation Module – A Tool to Research and Study the Wind Power System 3. Controller Design and Verification 4. Examples of Controller Design and Verification 5. Conclusion 6. Reference
Downloads
Introduction to a Wind Power System
The following figure shows the main components of a wind power system.
Figure 1. A Wind Power System and its Main Components
The main components of this system are the wind turbine, the mechanical drive train, the generator, the power grid, and the controller. The wind turbine converts the kinetic energy of the wind into mechanical energy. The generator converts the mechanical energy into electrical energy. The controller is the “brain” of the system. It ensures that the whole system works as expected.
The mechanical power Pmech is extracted from the wind. The following formula describes Pmech:
Pmech = 0.5 ρπR2v3Cp(λ,Ѳ) where Pmech is the mechanical power ρ is the air density R is the turbine’s radius v is the wind speed Cp is the power coefficient λ is the tip speed ratio Ѳ is the pitch angle λ is defined as:
where ωm is the turbine rotation speed R is the turbine’s radius v is the wind speed
The