Can ac excitation be used for alternator?

Mainly there are three points,1. If you give AC to the field coil, there is no need of rotating it, as AC itself produces alternating flux.Thus generator will give Transformer action which actually...

for torque improvement in armature and create n-pole or s-pole in armature a dc source is used in alternator armature.

For keeping the battery charged while using the headlights, radio, a/c, etc.

A power switching circuit called an inverter. You could also use an electromechanical motor-generator: DC motor turning an alternator.

Just buy a DC power supply that has the input supplied by 120 VAC and a DC output with required voltage and amperage.A rectifier is an electrical device that converts alternating current (AC), which...