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Small wind turbine
Wind turbines of 500 W to 10 kW power / From Wikipedia, the free encyclopedia
Small wind turbines, also known as micro wind turbines or urban wind turbines, are wind turbines that generate electricity for small-scale use. These turbines are typically smaller than those found in wind farms. Small wind turbines often have passive yaw systems as opposed to active ones. They use a direct drive generator and use a tail fin to point into the wind, whereas larger turbines have geared powertrains that are actively pointed into the wind.
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![Small wind turbine power output](http://upload.wikimedia.org/wikipedia/commons/thumb/6/62/Small_wind_turbine_power_output.png/640px-Small_wind_turbine_power_output.png)
They usually produce between 500 W and 10 kW, with some as small as 50 W. The Canadian Wind Energy Association considers small wind turbines to be up to 300 kW,[1] while the IEC 61400 standard defines them as having a rotor area smaller than 200 m2 and generating voltage below 1000 Va.c. or 1500 Vd.c.