Phase compound excitation circuit

In the figure, T-phase compound excitation transformer; L-reactor; VC- silicon rectifier ; C
capacitor.
    The excitation device consists of phase compound excitation transformer T, reactor L, capacitor C and silicon rectifier vc. When the generator starts
, the residual magnetism on the generator rotor induces an AC voltage on the stator winding. This voltage is added to the phase compound excitation transformer winding
∞l, causing the winding Ou2 to induce an AC voltage . After rectification by the silicon rectifier VC as the excitation current of the generator rotor. At the same
time, the current on winding ∞2 also affects the output current of winding t. When the generator voltage or load current changes, the excitation
current also changes accordingly, so that the generator maintains a constant voltage.