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Wind turbines


Momentumous

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windturbine1.jpg

Essentially wind turbines work to take the rotational energy of the turbine blades, and use a spinning shaft to convert that energy into electricity.

The blades are curved unevenly to make a change in air pressure, which causes them to spin when wind hits them, just like an airplane wing. These blades are connected to a spinning shaft, which is connected to a series of gears that amp up the rpm's. This is connected to a generator, which translates the rotation into electrical energy.

A generator works through electromagnetic induction. When a conductor is moving through a magnetic field, a voltage in induced through the conductor. The shaft and gears from the turbine are what move the conductors in the generator, which induce voltage and therefore generate electricity.

The turbine seems complicated, but by concept, it's pretty easy. We all know that by hand making our tiny "engine" from wire coil magnets is pretty difficult. The generator is a larger scale concept, with the shaft spinning what would be the coil and, combined with the magnetic field, producing electricity. Not too bad.

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