what are the parts of an electrical generator and how does it work?

Question

i want to know basically how a generator works, its parts, in shot stuff about generators

Answer 1

okay now you got me going on mechanics. when you spin the armature with mechanical energy, it spins a magnet inside a, most commonly, copper coil, producing a magnetic field. an inventor (forgot his name =\) thought "hey if magnets can turn with electricity, why not vice versa", and thus he created the first crude generator. the direction of the spinning magnet detirmines the polarity of the different ends of the coil, so make sure you get some more information because I do not know which rotation (clockwise or counter-clockwise) makes which polarity on which end.

Answer 2

Most generators comprise two main components - a prime mover (like a gas-powered engine) and the electric generator itself.

The engine spins the shaft of the generator causing its "rotor" to rotate. That rotor can be a magnet, but usually it is a steel core with copper wire, called the field winding. A dc current is fed to the field winding (explain how this is obtained later). THis produces a strong magnetic field that rotates. Other copper coils on the stationary member (stator) pick up this field.

The rotating field inside the stationary coils causes a voltage to occur in those coils. This is Faraday's Law (answerer above couldn't remember). It states the voltage is proportional to how fast the magnetic field is changing, so the faster the generator rotates, the more voltage.

Usually there are 3 coils on the stator, but in some cases just one. So it is called 3-phase or single phase, respectively. In the three phase case you get three voltages that are all AC but peak at different intervals. Usually household generators are single phase since that is all you really need in most cases - industrial generators are three-phase since they run three-phase power around factories, hospitals and so forth.

In any case, normally you feed some of this AC voltage through an AC-DC converter (rectifier) to get a DC voltage. That DC voltage drives the field winding (see above).

Usually there is a field controller to vary the DC current into the field winding so that exactly the right voltage is produced on the stator coils. There is usually a speed regulator that controls the engine speed (and therefore generator speed) to keep the frequency constant (usually 60 Hz in USA).

Answer 3

parts: 1. magnetic field 2. conductor

how works: conductor moved through magnetic field, the field resists the conductor and the energy of the movement is partially converted to electricity

there are many web sources that give good descriptions with details and pictures

buy one of those "shake powered" flashlights with a clear casing and you can see a simple generator in action

Answer 4

hi,
firstly generator is the device used for producing electric energy with mechanical energy as the input.This comprises of many parts like stator and rotar's.These r the two main components.other than them there are poles ,shoes, magnetic field,conductors,brushes etc.The stator is the stationary part and rorar is the rotating part these produce the required magnetic field for the genarator

Answer 5

If you go to this web site , www.howthingswork.com, it will tell you everything about an electrical generator,