A three-phase winding is integrated into the fixed stator. The rotary rotor carries a direct current winding. Voltage in the stator winding is induced through electromagnetic flux.
A synchronous generator runs at a constant speed and draws its excitation from a power source external or independent of the load or transmission network it is supplying. A synchronous generator has an exciter that enables the synchronous generator to produce its own reactive power and to also regulate its voltage.