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Generators

Generators. Brodi Kozak . Generator . A machine that converts one form of energy into another, esp. mechanical energy into electrical energy, as a dynamo, or electrical energy into sound, as an acoustic generator. What does a generator do?.

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Generators

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  1. Generators Brodi Kozak

  2. Generator A machine that converts one form of energy into another, esp. mechanical energy into electrical energy, as a dynamo, or electrical energy into sound, as an acoustic generator.

  3. What does a generator do? • A generator is a device that converts mechanical energy into electrical energy. • A generator forces electric charges to move through an external electrical circuit, but it does not create electricity or charge , which is already present in the wire of its windings.

  4. Sources of the Mechanical Energy The source of mechanical energy may be: • A reciprocating or turbine steam engine • Water falling through a turbine or waterwheel • An internal combustion engine • A wind turbine • A hand crank • Compressed air • Or any other source of mechanical energy

  5. Principle • Generators are based on the principle of electromagnetic induction, which was introduced by Michael Faraday in 1931. Faraday’s Disk-- a type of homopolar generator Michael Faraday (1791-1867)

  6. How Does it Work? A spinning copper coil located between two magnets can create a steady flow of electrons. Forcing these electrons or electric charges to move through an external circuit that connects to anything that needs power produces the energy to make it work. The relation between magnets and electrons shows how a generator functions. By passing electrons through electrical wires, conduction of electricity happens when forced by the magnetic fields produced when mechanical energy converts into electrical energy.

  7. Wind Powered Generators The propellers or blades around a rotor turn when the wind blows against them, producing energy. This energy passes from the rotor to the main shaft, then spins the generator to create electricity. A tower approximately 100 feet in height holds the wind turbines to capture most energy coming from the wind, Wind turbines can produce electricity for a single building or home as well as distribute electricity though power grids.

  8. Gas Powered Generators • During a power outage, home appliances run on gas powered electricity. Home generators provide temporary power by the introduction of electricity through temporary connection of the appliances to the generator. If desired, connection to a homes electrical system permanently can automatically trigger electricity during blackouts.

  9. Human Powered Generators • A generator can also be driven by human muscle power. • Typically operated by means of pedal power, a converted bicycle trainer, or a foot pump. • Practically used to charge batteries, and in some cases are designed with an integral inverter. • The average adult could generate about 125-200 watts of pedal powered generator.

  10. Vehicle Generators • Generators work in vehicles by providing the electrical energy to run it when the engine is working. It charges the battery at the same time. This is a vital function of a generator because it provides power for the proper functioning of the computer-controlled engine • It also optimizes fuel economy and reduces discharge.

  11. Two Types of Generators There are two types of generators portable and standby.

  12. Standby Generators • Larger than portable ones • By permanently installing or stationing them outside an building or home the provide back up power in case the main source of power is lost. • Plug the standby generators into the main electrical lines to enable automatic sensing of power interruption by the generator. • It should only take a few seconds for the standby generator to come online. A example of a home standby generator

  13. Portable Generators • Not stationary and smaller than standby generators. • Are transported on a rolling cart or a trailer or lifted by hand. • Provide temporary power for areas such as camping sites or construction sites. • They can provide enough power for smaller appliances by using gasoline as fuel. A portable generator

  14. Importance of Generators Generators can provide electricity during power interruptions. They can prevent companies from losing productivity during power outage. Ian a household, generators can prevent food spoilage and enable people to was and iron clothes during a power outage.

  15. For more information on how generators work…….. • http://science.howstuffworks.com/electricity2.htm • http://www.differentsourcesofelectricity.com/power-generators.html • http://en.wikipedia.org/wiki/Electrical_generator • http://www.reference.com/browse/generator?qsrc=2888 • http://www.youtube.com/watch?v=Aa0QghwxFHs

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