Generator: Difference between revisions

From Physics Book
Jump to navigation Jump to search
No edit summary
Line 8: Line 8:


The current produced by the generator can be found by the two simple formulas '''I''' = '''emf/R'''  and '''emf''' = '''Df/dt'''. '''Df/dt''' is the change in magnetic flux over time.
The current produced by the generator can be found by the two simple formulas '''I''' = '''emf/R'''  and '''emf''' = '''Df/dt'''. '''Df/dt''' is the change in magnetic flux over time.
===A Computational Model===
How do we visualize or predict using this topic. Consider embedding some vpython code here [https://trinket.io/glowscript/31d0f9ad9e Teach hands-on with GlowScript]


==Examples==
==Examples==
Line 21: Line 17:


==Connectedness==
==Connectedness==
#This topic related to the production of Energy which interests me because I intend to go into Aternative Energies.
#This topic related to the production of Energy which interests me because I intend to go into Aternative Energies.
#This is related to Electrical Engineering because it deals with the generation of electricity.
#This is related to Electrical Engineering because it deals with the generation of electricity.
#Generators are the interesting intustrial application of Faraday's Laws
#Generators are the interesting intustrial application of Faraday's Laws


==History==
==History==
Line 56: Line 54:
http://ethw.org/Generators
http://ethw.org/Generators


[[Category:Which Category did you place this in?]]
 
 
[[Category:Real Life Applications of Electromagnetic Principles]]

Revision as of 22:23, 3 December 2015

This page is about how Electric Generators convert mechanical energy into electric energy.

The Main Idea

In electromagnetics, a generator is a device that takes mechanical energy and converts it into electric energy. Thanks to Faraday's Laws of Motional EMF, it is possible to induce EMF in a conductor by moving it through a magnetic field. If that conductor is connected to a complete circut, the conductor will act like a battery and create an electric current in the circut.

A Mathematical Model

The current produced by the generator can be found by the two simple formulas I = emf/R and emf = Df/dt. Df/dt is the change in magnetic flux over time.

Examples

Simple

Difficult

Connectedness

  1. This topic related to the production of Energy which interests me because I intend to go into Aternative Energies.
  2. This is related to Electrical Engineering because it deals with the generation of electricity.
  3. Generators are the interesting intustrial application of Faraday's Laws


History

Around 1870, after electricity had been around for a while, scientists wanted to find a way to use Faraday's Laws to generate electricity. First they came up with the DC generator, which creates a Direct Current. A little while later the AC generator, which produces Alternating Current, was developed.

Thomas Eddison used the DC generator in his creation of the lightbulb because of the avalibility of DC generators and moters. The DC current worked fine for small scale power, but it was a poor way to transport electricity over long distances. After Nikola Tesela invented a working AC motar and improved the AC generator, power companies were able to generate and distribute larger scale electricity.

According to Legend, Thomas Eddison strongly opposed the AC current system which made his DC current less relevant. In order to demonstrate the dangers of AC current, on January 4, 1903 he filmed the electrocution of an elephant named Topsy.

Poor Topsy

See also

Faradays Laws Motional EMF

Further reading

Matter and Interactions

External links

[1]


References

https://en.wikipedia.org/wiki/Electric_generator http://www.electrical4u.com/principle-of-dc-generator/ https://www.webassign.net/ebooks/mi4/toc.html?page=23.1 http://ethw.org/Generators