Transient control simulation of AC drive locomotive network side converter system

The side converter system is nuclear assembly in AC drive locomotive, parameter matching between in transformer and rectifier, in addition to transient the control strategy of 4QC, which are relation to the design of transformer and the work condition of side converter system. This paper adopts the transient current control strategy, the model of 4QC is based on MATLAB/simulink simulation software, then analyzed the transient process at side converter system which is constitude of the transformer and the rectifier. As a result, the side converter system can improve the dynamic response and stabilization with side voltage and current feedforward, in addition, there is excellent characteristic for resisting frequent power voltage fluctuating and harmonics.