There are a number of wind power turbine designs on the market and this article details the unusual Savonius wind turbine. Unlike the more common horizontal home wind turbine designs, the Savonius wind turbine is based on a perpendicular architecture that relies on vertical vanes to rotate in the wind. This rotation is then transferred through a vertical shaft to the generator for the production of electricity. This wind turbine is the unequaled choice for applications that use minimal power, but extreme dependability 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 various styles of equipment used to capture the power of the wind and convert 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 actual piece of the turbine that spins looks more like a spinning canister that fasten to a vertical shaft connected to the generator also mounted vertically near the ground. This vertical cylinder then catches the wind, spins the shaft to the generator to generate the electrical current.

The earliest design of this variety of turbine was completed in 1922 by Sigurd Savonius, a Finnish engineer. This type of turbine is utilized quite often because of it's straightforward design and reliability. Additionally, because it spins on a level axis, there is no need to have a directional device to keep the unit aligned with the wind like other models. It can catch the wind in any direction and reacts at once to changes in wind direction. This design of turbine is considered a "drag style" turbine from an aerodynamic point of view.

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 takes advantage from the differential created and changes it to rotation. Because in general drag type turbines are less efficient, it does not make as much power as its more usual horizontal cousin, but can still have a wide range of applications. This sort of wind turbine is used in the majority of the atmospheric monitoring stations around the world as these tend to be located in remote areas and the importance of dependability and low power consumption make the Savonius wind turbine a perfect choice.

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

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