There are a multitude of wind power turbine design styles on the market and this article details the specifics of the exceptional Savonius wind turbine. Unlike the more typical horizontal wind turbine designs, the Savonius wind turbine is based on a vertical architecture that relies on vertical vanes to turn in the wind. This rotation is then transferred through a vertical shaft to the generator for the production of electricity. This home wind turbine is the best solution for applications that have need of minimal power, but extreme reliability The simplicity of the Savonius design makes it a popular choice among applications that require as little maintenance as possible.

In the scope of wind generated power there are different styles of equipment used to capture the power of the wind and transform it to electricity. Most of the designs follow the typical style of a windmill, or airplane style propeller that sits atop a tower and rotates to catch the wind. The Savonius wind turbine style is different in design because it's a vertical axis wind turbine (VAWT). This means that the real part of the turbine that spins looks more like a rotating canister that fasten to a vertical shaft coupled to the generator also mounted vertically near the ground. The vertical cylinder then catches the wind, rotates the shaft to the generator to create the electrical current.

The beginning design of this variety of wind turbine was completed in 1922 by Sigurd Savonius, a Finnish engineer. This kind of turbine is used today often because of it's straightforward design and reliability. Also, because it spins on a level axis, there is no need to have a directional mechanism to keep the unit aligned with the wind like other models. It can catch the wind in any direction and reacts without delay to changes in wind direction. This kind of turbine is considered a "drag style" turbine from an aerodynamic prospective.

It is designed on the principle that because of the canisters shape, it experiences more drag when moving with the wind than against it and it benefits from the differential created and changes it to rotation. Since in general drag type turbines are less efficient, they does not create as much power as the more familiar horizontal cousin, but can still have a wide range of applications. This type of wind turbine is used in the majority of the atmospheric surveillance stations around the world as these tend to be located in remote areas and the value of dependability and low power consumption make the Savonius wind turbine a sound choice.

They are also used on other out of the way locations like buoys far out in the ocean. They are also sometimes used to draw attention to advertising signs. In this application they are not used to make any power, but have opposite sides painted contrasting colors to clutch your attention as they spin. So in general the Savonius wind turbine is a very unusual design that lends itself to many varied applications. Its reliability and simplicity make it the unequaled choice for situations that require minimum power generation, but rock solid performance

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