What does the car alternator do?

1. The function of the automobile alternator: it is the main power supply of the automobile and is driven by the engine. It supplies power to all electrical equipment except the starter during normal operation, and then charges the battery when there is residual energy.

2. The car alternator has little to do with the power and performance of the car. It is ok to change a generator that is not from the manufacturer, but we must use a generator with good quality from a regular manufacturer, mainly depending on the power generation, stability and service life.

Extended data:

Working principle of alternator

1, the mechanical energy of the prime mover is converted into electric energy output by using the electromagnetic induction principle of the electric potential induced by cutting the magnetic field lines by wires. Synchronous generator consists of stator and rotor. Stator is armature and rotor is magnetic pole.

2, the rotor is usually hidden pole type, composed of excitation winding, iron core and shaft, center ring, etc. Direct current is introduced into the excitation winding of the rotor, which produces a magnetic field with nearly sinusoidal distribution, and its effective excitation flux intersects with the static armature winding.

References:

Baidu Encyclopedia-Alternator (including function)