- Renewable & Alternative Energy
How A Wind Turbine Works; Save Energy
Before we get to wind turbines first we need to talk about the force that moves them. Air is made of up gas particles. When they move they produce wind. This motion is called kinetic energy. A wind-electric turbine can capture kinetic energy. The wind starts with the sun. It heats up part of the land. The air around the warm land mass absorbs the heat. When air reaches a certain temperature it rises. When the hot air raises it leaves a void. Cold air rushes in to fill the void, creating wind.
The blades of the turbine are designed to create an obstruction to the motion of the wind, capturing some of the winds energy as it moves past it, transfering the kinetic energy into mechanical energy. The same thing occurs with the sail of a sailboat or a weather vain. The shaft of the wind turbine spins the generator.
A generator produces electricity through a process called Electromagnetic induction, which was discovered by Michael Faraday in 1831. His theory was, if an electric conductor is put in motion and exposed to a magnetic field, it would create a constant flow of energy, which can be turned into different currents of electricity, (either AC or DC).
Inside of the generator is an armature. This is an electricity-conducting metal (usually copper wire wound around a shaft), which spins inside either permanent magnets or electromagnets. As the armature spins between the poles of the magnet it will produce a steady current of electricity
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