The Energy Distribution Analysis of Traction Power Supply System Based on MATLAB/Simulink

This paper investigated the energy distribution of traction power supply system (TPSS). According to the topology of TPSS, the energy flowing paths of TPSS are analysed. And the control strategies of traction drive system (TDS) are investigated for a delicate high-speed train (HST) model. Furtherly, a detailed train-network coupling simulation model is established based on the MATLAB/Simulink software, and the energy distribution in whole system is analysed. The results indicate that about 2.5% of energy is consumed by traction substation and traction network. Moreover, about 90% of the energy consumed by the TDS can be transformed to the traction motor and 15% energy is regenerated and fed back to the traction network. In addition, some influence factors are analysed and a few target energy saving suggestions are proposed.