面向地铁车辆的辅助逆变系统设计

Design of auxiliary inverter system for the subway vehicle

为使地铁辅助逆变系统在负载突变过程中能够保持输出电压稳定性,从而满足地铁辅助逆变系统需求,本文提出一种面向地铁车辆的双级功率变换高频辅助逆变系统结构,采用TDSVPWM调制算法和DSP+FPGA的控制框架,实现了良好的负载跟踪性能。通过MATLAB仿真和实验平台试验,证明该系统在负载突变过程中能够保持电压稳定性,运行状态良好。

In order to make the auxiliary inverter system of the subway vehicle maintain stable performance in the process of load mutation, so as to satisfy the requirement of the auxiliary inverter system of the subway vehicle, the paper proposes an auxihary inverter system for the subway vehicle. The system adopts Two-stage power conversion and high-frequency system structure. The syetem uses the control framework of DSP ＋FPGA to achieve good load tracing performance. The Matlab simulation and the experiment platform test show that the voltage signal keeps stable when the system load changes in an instant and it proves that the system works well and runs in good condition.