Method and system for controlling auxiliary power supply system of high-speed motor train unit and high-speed motor train unit

Abstract

The invention discloses a method and system for controlling an auxiliary power supply system of a high-speed motor train unit and a high-speed motor train unit, wherein the method comprises the following steps of: firstly, acquiring closing states of circuit breakers among carriage groups of the high-speed motor train unit; carrying out interval grouping on traction auxiliary converters among thecarriage groups according to the closing stats of the circuit breakers; finally, starting the traction auxiliary converters in each interval group; in the process of starting the traction auxiliary converters in each interval group, one traction auxiliary converter in the same interval group is firstly controlled to be started, and then other traction auxiliary converters are controlled to be started at the same time, so that the aim of shortening the whole starting time of an auxiliary power supply system is achieved on the basis of avoiding the problem of phase-to-phase short circuit causedby the fact that the traction auxiliary converters are started at the same time.

Description

technical field [0001] The present application relates to the technical field of rail transit, and more specifically, to a control method and system for an auxiliary power supply system of a high-speed EMU, and a high-speed EMU. Background technique [0002] High-speed EMUs refer to EMU trains with a construction speed of more than 200km / h, and their operating speed generally reaches more than 250km / h, which belongs to the higher-level type of high-speed trains. High-speed EMUs can meet transportation needs such as long distance, large volume, high density, and short travel time. [0003] From the perspective of vehicle cost, light weight and simplified system control, high-speed EMUs generally adopt the technical solution of traction and auxiliary integration, that is, the auxiliary power supply system in high-speed EMUs usually includes multiple traction auxiliary converters, Among them, the traction auxiliary converter is connected to the grid to output the AC medium vol...

AI Technical Summary

Problems solved by technology

[0004] When controlling the traction auxiliary converters of the auxiliary power supply system, in order to avoid the phase-to-phase short circuit caused by the simultaneous start-up of the traction auxiliary converters under the same AC bus, it is necessary to start the traction auxiliary converters sequentially, that is, the multi- The traction auxiliary converters are started one by one according to a certain sequence. This method can effectively avoid the problem of phase-to-phase short circuit when the auxiliary system is started. vehicle startup time

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