Synchronizacja silników dwubiegowych z zamkniętym układem regulacji prądu wzbudzenia

The work presents calculation results of synchronization process of a two-speed, silent-pole, high power synchronous motor. The calculations were based on the examined two-dimensional, field-circuit model for the high power motor, type GAe 1716/20t with switchable configuration connection of armature winding and field magnet. The motor is applied in fan drives in underground mines. The influence of the excitation voltage value greater than nominal and nominal during synchronization process on stator currents, excitation current, electromagnetic torque and rotational speed was examined. The influence of constant excitation voltage value and close-loop excitation current control on synchronization process have been compared. Dynamic diagrams of stator currents, excitation current, excitation voltage, electromagnetic torque and rotational speed during synchronization process as results of computer simulation are presented.