Mini Wind Turbines are an alternative form of energy production that is growing in popularity as energy prices rise, fossil fuel supplies become depleted, and the energy grid continues to become more fragile. These machines efficiently convert kinetic energy to mechanical energy that can be used in all electricity applications. Here are several popular types of mini wind turbines.

Horizontal Axis Mini Wind Turbine

This is the most common design, and features a shaft that is parallel to the ground with the blades running perpendicular to the ground. This type can be mounted on the ground, a roof top, or on a pole of various heights. The flexibility for pole mounting allows these mini turbines to be raised as high as needed to catch the wind. A small wind tail or vane points the turbine into the wind. They typically have three stiff blades to capture that drive the generator. Horizontal designs are the most efficient. Low vibration and low noise are other features.

Vertical Axis Mini Wind Turbine

Here, the rotating shaft is perpendicular to the ground, with the blades rotating parallel to the ground. They may have the advantage of capturing wind in settings where it is quite variable, since the turbine does not need to be pointed directly into the wind. These are commonly placed on the ground or rooftops, rather than on mounting poles. Rooftop mounting may increase rotation speed significantly as the building redirects wind up and into the mini wind turbine’s position.

Darrieus Mini Wind Turbine

This style is a derivative of vertical axis wind turbines. Three vertical aerofoil blades are employed, and are manufactured with a helical 60-degree twist that enhances their ability to capture wind. The design diminishes destructive force of the rotations, providing greater durability. Not in wide use, but continued testing and design changes offer possibilities.

Further Reading:

• Horizontal Turbines
• Vertical Turbines
• Darrieus Turbines

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The Sunforce 44447 Whisper 100 900 Watt Wind Generator uses wind to generate power and run your appliances and electronics. Constructed from lightweight, weatherproof cast aluminum, this generator is also a great choice for powering pumps or charging batteries for large power demands. With a maximum power up to 900 watts or 60 amps, this device features a fully integrated regulator that automatically shuts down when the batteries are completely charged. The 44447 is virtually maintenance free with only three moving parts, and the carbon fiber composite blades ensure low wind noise while the double-sealed ball bearings guarantees a smooth,[Read More]