Transient Vibration Suppression of Synchronous Motor Driving System with Field Circuit Control

Abstract

The present study deals with transient torsional vibration problems. To suppress the torsional vibrations during the starting period, a passive element is inserted in the field circuit of a salient pole synchronous motor driving a high inertia load system. The optimal passive circuit parameters in the starting field circuit control schemes are determined by the proposed parameter optimization algorithm with the unified quadratic vibration performance indices. Computer simulation and Fast Fourier-Transform (FFT) analysis show that the transient torsional vibrations can be considerably improved when the field circuit is connected to the proposed starting control scheme. The risk of premature component failure, due to the excess of the designed limit for transient torsional stresses, can also be diminished.