non-rotative wind generator takes on turbine wind generators’ efficiency
October 15, 2007 § 7 Comments
Shawn Frayne, a 28-year-old inventor based in Mountain View, Calif., saw the need for small-scale wind power to juice LED lamps and radios in the homes of the poor. Usual wind turbines don’t scale down well – there’s too much friction in the gearbox and other components.
His device, which he calls a Windbelt, is a taut membrane fitted with a pair of magnets that oscillate between metal coils. Prototypes have generated 40 milliwatts in 10-mph slivers of wind, making his device 10 to 30 times as efficient as the best microturbines. Frayne envisions the Windbelt only costing a few dollars
In a conventional wind generator, gears help transfer the motion of the spinning blades to a turbine where an electric current is induced. The Windbelt is simpler and more efficient in light breezes—a magnet mounted on a vibrating membrane simply oscillates between wire coils.
Click the image below for a clip.
In an experiment to optimize the efficiency of the original Windbelt, Amity Sci Research have build a solution that produces approximately six times as much electrical power as the original Windbelt. This new configuration utilizes thicker magnets, more coil generators, and a more elastic film than the original design. These results establish the Windbelt as a compelling replacement to small wind turbines and other renewable energy sources.