mechanical electricity may be  
calculated as  
wherein Cp is the electricity coefficient of the blade. This coefficient has a theoretical  
most price of 0.fifty nine consistent with the Betz limit. With today`s technology, the electricity  
coefficient of a contemporary-day turbine typically degrees from 0.2 to 0.5, that's a feature of  
rotational velocity and quantity of blades.  
Rotor :  
The blades and the hub collectively are referred to as the rotor.  
Pitch :  
Blades are turned, or pitched, out of the wind to govern the rotor velocity and maintain the  
rotor from delivering winds which are too excessive or too low produce electricity.  
Brake :  
A disc brake, which may be implemented mechanically, electrically, or hydraulically to stop  
the rotor in emergencies.  
Low-velocity shaft :  
The rotor turns the low-velocity shaft at approximately 30 to 60 rotations in line with minute.  
Gear box :  
Gears join the low-velocity shaft to the excessive-velocity shaft and growth the rotational  
speeds from approximately 30 to 60 rotations in line with minute (rpm) to approximately a thousand to 1800 rpm, the  
rotational velocity required with the aid of using maximum mills to provide electricity.  
Wind vane :  
Measures wind route and communicates with the yaw pressure to orient the turbine  
nicely with appreciate to the wind.  
Generator :  
Usually an induction generator that produces 50-cycle AC electricity

High-velocity shaft :  
High velocity shaft drives the generator.  
Hub :  
The valuable strong part of the rotor wheel is referred to as hub. All blades are connected to  
the hub. Mechanism for pitch perspective manipulate is likewise supplied in the hub.  
Nacelle :  
The rotor is connected to the nacelle, installed on the pinnacle of a tower. It includes the tools  
field, low- and excessive-velocity shafts, generator, controller, and brake. Some nacelles are large  
sufficient for a helicopter to land on. Brakes are used to prevent the rotor whilst power  
era isn't desired.  
Gear field :  
The tools field is a costly (and heavy) a part of the wind turbine and engineers are  
exploring "direct-force" mills that function at decrease rotational speeds and don`t need  
tools boxes.  
Controller :  
The controller begins offevolved up the gadget at wind speeds of approximately eight to sixteen miles according to hour  
(mph) and shuts off the gadget at approximately fifty five mph. Turbines do now no longer function at wind  
speeds above approximately fifty five mph due to the fact they is probably broken with the aid of using the excessive winds.  
Anemometer :  
It measures the wind velocity and transmits wind velocity statistics to the controller.  
Yaw force :  
Upwind mills face into the wind; the yaw force is used to preserve the rotor going through into  
the wind because the wind path changes. Downwind mills do not require a yaw force,  
the wind blows the rotor downwind.  
Yaw motor :  
Yaw motor withinside the turbine powers the yaw force.  
Tower :  
Towers are crafted from tubular metallic , concrete, or metallic lattice. Because wind velocity  
will increase with height, taller towers allow mills to seize extra power and generate  
extra electricity.