Analysis of Three Kinds of Power Supply Modes of Auxiliary System in Urban Rail Train

This paper analyzes three modes of auxiliary power supply system: cross power supply mode, extended power supply mode, and parallel connected power supply mode, and there is a detailed introduction of the parallel connected system. The advantages and disadvantages of the three modes under the condition of faults are analyzed. Finally, the three power supply modes are compared. This paper can provide reference for the selection and design of auxiliary power supply system in urban rail train.