Wednesday, December 15, 2010

Vibrating Wind Turbine Generator

Hello Future Engineer,

You may have seen many a type of wind turbine, and a common feature must have been that somehow wind energy caused rotation of the shaft that was coupled to a generator. The rotor of the generator rotates in a magnetic (or an electromagnetic) field, thus generating electricity. Of course, there is more physics to it, but I will spare you the details to continue on to something more interesting.

Shawn Frayne came up with a vibrating wind turbine, one that does not require any rotating parts. It works on the principle of aeroelasticity (von Karman vortex shedding causing the structure shedding vortices to vibrate), wherein vibration of the conducting membrane in a magnetic field generates electricity. In case if you wonder about benefit of this idea, please click on his name above and find out!

There is one apparent drawback to this device in that eventually metal fatigue will cause the membrane to fail. But that is easy to fix compared to a broken solar electric panel.

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