Excitation system conventionally from an alternating current generator consisting of a direct current source connected to the AC generator field via slip-rings and brushes. DC source is usually obtained from a direct current generator driven by the motor or drive the same first mover generator back and forth at first. After the arrival of solids, some of the different excitation systems have been developed and used.
In similar systems, it is used by the generator with a capacity greater power is the power rectifier incorporated into solids separate from the three-phase winding that is located above the generator stator grooves. The only function of this coil is to provide excitation power for the generator.
Output that have rectified from the exciting AC, given directly to the relationship that was isolated along the shaft to a rotating field synchronous generators. The field of the exciting ac is stationary and powered from a separate DC source. Means, that the voltage generated by the synchronous generator can be controlled by changing the exciting AC field strength.
