Layout of Horizontal Axis Large Capacity Wind Power Plant (Block Diagram)
Functions of Main Components :
- Rotor blades fitted (supported) in the hub.
- Wind power is received and blades start rotating.
- At the top side of tower, turbine and generator assembly are located. Turbine and generators are mechanically coupled.
- Large capacity turbines are provided with sensor coupled with motor.
- As discussed in figure the detailed structure consists of a tower with foundation; hub and rotor, drive train, gears, generator, nacelle, pitch controller, power converter.
- The shaft axis is horizontal.
- Wind force hits the turbine blades and causes its rotation and hence generator coupled to It rotates and electrical energy is the output.
- The system may be connected to feed power to Grid system or may supply the power to the loads directly.
- Use of nacelle (head) is measure speed and to know wind direction also anemometer, wind vane and controller arrangement are active when in operation.
- In extreme conditions, the turbine may be damaged.
- To safeguard turbine, safety features with breaking arrangement are provided.