Design and functioning of a wind turbine

A commercial grade horizontal wind turbine has the following subsystems

 Rotor

• 1,2, or 3 blades
• Aero braking systems
• Pitch controls

 Drivetrain

• Gearbox
• Hydraulic Systems
• Shafts
• Braking system
• Nose cover (nacelle)

 Yaw system

• Direction control
• to the wind stream

 Electrical and Electronic

• Generator
• Relays
• Circuit Breakers
• Wiring
• Drop Cables
• Controls
• Sensors
• Power Electronics

 Support Systems

• Roads
• Ground Support Equipment
• Power Substation