An 'alternator' is simply another term for an a.c. generator, that is a rotating machine that generates electrical energy. A 'transformer', on the other hand, is a static machine that changes the levels of voltage -they either step up a voltage or step down a voltage.
the efficiency of transformer is more than alternator, because 1- the alternator have friction and windage loss but in transformer this not occure. 2- in the alternator the flux leak is more than the transformer, because in case of alternator the flux move through the air which is dimagnet and in transformer flux move through silicon steel. 3- in the other hand alternator have dc compound generator for exciation (depend on other electric course 220volt) but in t/f is not need.
= What is the different between permanent magnetic alternator and alternator? =
An alternator is just a small generator that generates AC power and is converted to 12v DC power via a transformer for battery storage and use.
Voltage Tarnsformer transforms only voltage. While power transformer transforms both voltage and current.
Using a transformer.
Through a coupled inductor, similar to a transformer, but working on DC instead of AC.
A transformer changes the VOLTAGE of AC current (AC to AC). A rectifier changes AC to DC.
Are you are asking why an alternator's terminal voltage needs to be increased, using a transformer, for transmission? The answer is that the voltage supplied by an alternator is determined by how many conductors can be inserted into its stator slots and this, in turn, is limited by the physical size of the alternator. So the output of alternators is limited to around 300 kV.
We replaced the alternator on 2 different vehicles. It was around $175 for each.
If question is about a transformer's tapped coil then the taps are a way of getting different voltages from one transformer. The end of the transformer's coil is the common point and the taps to this common point will give different voltages depending on where in the coil the taps are taken from.
Everyone has different opinions.
switchinglinearferroresonant-transformer