Method for restoring a plurality of auxiliary inverters of train in normal starting sequence

Abstract

A method for restoring a plurality of auxiliary inverters of a train in a normal starting sequence belongs to the field of detecting the inverter starting sequence fault of a formatted train which comprises a plurality of inverters. According to the method of the invention, reasons for failed logic bit starting fault of the auxiliary inverters are sufficiently considered, and furthermore a more appropriate resetting condition is designed and determined in a more targeted manner. According to the method, early-period preposing and later-period remedy can be performed on normal auxiliary inverters which are cut and isolated by a TCMS in a starting sequence because of a logical misjudgement; and early starting failure logical bit resetting and later starting failure logical bit resetting are performed, thereby effectively preventing the logical misjudgement, furthermore preventing unnecessary middle-voltage unloading, and reliably ensuring high smoothness in successive starting cycle of the auxiliary inverters. Furthermore the method has functions of preventing train equipment idling and substantially improving safety and reliability in smooth operation of an intermediate-voltage power supply system in the train as well as sitting comfort of passengers.

Description

Technical field [0001] The invention belongs to the field of inverter starting sequence fault detection and fault elimination methods for a marshalling train containing multiple inverters, and in particular relates to a method for restoring the normal starting sequence of multiple auxiliary inverters of a train. Background technique [0002] When marshalling trains containing multiple inverters such as subways or high-speed EMUs are in operation, AC equipment such as on-board air conditioners and air compressors still require 380V AC medium-voltage bus power. Generally, the AC medium-voltage bus power is obtained by inverting a 1500V DC high-voltage bus power by an on-board auxiliary inverter. [0003] Since the capacity of a single auxiliary inverter cannot meet the power supply requirements of all medium-voltage loads on the entire train at the same time, the train network control system (Train Control and Management System, TCMS) usually controls the four auxiliary inverters to ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing TCMS control system fails to include detection and troubleshooting methods for the logic misjudgment of the auxiliary inverter startup failure logic bit, therefore, if the TCMS fails to send the startup failure signal in time at the initial stage of the next train start If it is cleared to zero, the TCMS system will always record that the auxiliary inverter fails to start.

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