What are the Energy Sources and Process in a Generator?
The process of electric power generation is the transformation from generators. And for there to be a transformation, there must be a source that is taken as the basis for making the change. This source is all energy that is considered as non-electric. In this group, the particular energies enter i.e. thermal, mechanical, luminous and chemical, among others. This change in energy takes place in the vicinity of appropriately named power plants, which only perform the first steps of the process. The following corresponds to the supply of the energy that has been generated, that is, all the details of transport and distribution.
As for that source that is taken for the transformation, it is known with the name of primary source. The nature of the same is what will condition the type of power plant. For example, the thermoelectric plant generates electric energy from energy expelled in the form of heat by the combustion of gas or oil, to mention a few examples. In the case of the nuclear power plant, the process of transformation of nuclear energy into electrical energy is carried out. In wind power plants, the kinetic energy generated by the air stream is used. In the tidal power plants, the energy comes from the tides.
But in spite of the differences in the distinguishing feature of the primary source, all these power generators have, as a key device, the energy generating element. It consists basically of an alternator. It is a machine that is the one that finishes making the transformation of the source or primary energy into electrical energy. The process employed is the one of induction which produces the voltage, also called electromotive force.
What is generated through induction is an electric current whose magnitude and direction are in the permanent cyclic variation. This current is known as the alternating current. The alternator must always have an inductor element that generates the magnetic field and a passive element induced that will always be crossed wide by the forces emanating from the magnetic field. It should be mentioned that the alternator will not be able to operate without the action of a fluid engine, commonly known as a turbine which will fluctuate in its characteristics according to the characteristics of the primary energy to be transformed, hence, there is a special turbine to each power station that owns electric power generators.
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