Application of Netless Self-running Technology for Urban EMU

Taking the application project of a new generation of fully automatic unmanned urban EMU in certain city, netless selfrunning function of urban EMU achieved by adopting on-board energy storage system is introduced, which has solved the problem of urban EMU abnormal operation on the trunk line due to electricity failure, and the problem that urban EMU will park in neutral zone after failure occurs and can only exit with help of rescue, realizing fully automatic unmanned rescue for urban EMU. The traction simulation calculation of 15 km traction on straight path (tunnel) and 600 m traction on 20‰ slope (neutral zone) are analyzed respectively, under the AW3 load conditions of rban EMU vehicle using lithium titanate on-board energy storage systems. The energy and power demands for on-board energy storage system are brought about, and the system solutions that consider both aspects are put forward. Other than meeting the demand of traction energy and power, the scheme also mentioned the demand from rail transit industry for subcomponent parts size, weight, safety, and intelligent management, lithium titanate is eventually chosen as the energy storage equipment for the on-board storage system. With the function of the battery management system (BMS), how to make efficient and reasonable use of on-board energy storage system and to maximize the system utilization are depicted.