Design, construction and study of a vertical axis wind turbine by utilizing permanent magnets and optimisation in mechanical design
Vertical axis wind turbines (VAWT) with Savonius design are much less popular forrnelectricity generation purpose compared to other types of wind turbines due to its lowrnrotor efficiency and its low operating speed. Recent developments to increase thernrotor efficiency of a Savonius wind turbine has been done intensively mostly byrnmodifying the shape of the blades to allow better aerodynamics of the rotor blades.rnThe aim of this thesis work is to build a small scale conventional two blades Savoniusrnwind turbine with axial flux permanent magnet synchronous generator and experimentrnother possible methods to increase the overall efficiency of this type of wind turbine.rnThis is done by utilizing optimization blades to increase the rotor efficiency andrnsimple magnetic levitation using permanent magnets to partially nullify the weight ofrnthe rotor, hence reducing the mechanical friction of the rotating parts.
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