Optimization of aeroturbine in wind Electric generators

Abstract

Wind Electric Generators WEG are one of the cheapest machines newlineto produce electricity if the costs such as environmental pollution cost health newlinecost fuel cost are considered The three blades along with the hub are known newlineas an aeroturbine of a WEG The aeroturbine is mounted on a slow speed newlineshaft A gear box is used in between this slow speed shaft and the generator in newlinea WEG A 75m long blade of modern 6MW WEG weighs 25 tons It is newlineobvious that huge weight of these aero turbines will exert more load on the newlinecomponents of a WEG The tower and foundation of a WEG have to newlinewithstand the load and vibrations generated during working this make the newlinedesign of WEG quite robust and increase the cost of wind power Thus the newlineobjective in blade design is to decrease its weight by using suitable materials newlinewithout compromising the essential material properties newline newline