- Construction of Horizontal Axis Wind Turbines a Beginners Approach
The most important component of a Wind Energy Converter is the rotor. The efficiency of a rotor is characterized by its profile (airfoil section) and the corresponding aerodynamic design. The NACA 4415 is selected as an aerofoil for the rotor due to its increased efficiency. A light with a good strength is used for the blades. The blade is carved at different blade angles.Alternator is made of two components, magnet rotor and stator. Magnet rotor is mild steel disk with magnets positioned on it using molding process. Stator is made of 9 coils. Each coil with 220 turns number of turns. The stator is sandwiched between the magnet rotors. With the rotary motion of magnet rotors, flux is generated and hence AC voltage is in the coil which is converted into DC voltage with the help of bridge rectifiers. The output in the form of DC volt is used to charge the battery. The furling system is used for rotating the turbine to the desired direction of the wind.
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