A Battery Embedded Static Railway Power Conditioner Based on Reshaped Half-Bridge Converter

The recycling and reusing of regeneration breaking energy of locomotives matter with the increasing popularity of electrical railways. In this paper, a battery embedded static railway power conditioner on the basis of reshaped half bridge converter is proposed. Different to the general energy storage system integrated railway power conditioner, this proposed system features with a reshaped half-bridge converter topology, which can work as a half bridge converter or as a DC/DC converter as needed, and thus no extra DC/DC converter is need for energy storage system connection. The main concerned matters such as transferring power between two feeders, supplying energy for or recycling energy from feeders can be carried out with all power switches participated. So the ability of installed power switches is fully utilized. The system structure, operation mechanism, and power conditioning strategy and control method are concretely analyzed. With a hardware-in-the-loop experimental carried out by OP5707XG platform and TMS320F28335, the effectiveness of the proposed system is verified.