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Synchronous generator

The turbine turns the rotor of the synchronous generator via the generator shaft onto which electromagnetic poles have been placed. There are windings on the fields through which excitation currents flow, necessary to produce magnetism in the fields. Magnetic field concludes over the air gaps and the stator. A stator winding is installed in the stator. When the rotor rotates, forces from the magnetic fields hit the stator winding, inducing electric voltage.

The excitation module is a single-direction electric generator mounted above the generator shaft, giving off the necessary excitation current.

The auxiliary excitation module is connected to the generator shaft and serves to excite magnetic fields. It has permanent magnetic fields and thus does not require excitation current.

Generator poles and stator winding