Centralized column supply management unit and system based on four-quadrant control

Abstract

The invention discloses a centralized column supply management unit based on four-quadrant control. The centralized column supply management unit comprises an AD (Analog to Digital) data sampling unit, a processing unit and a communication unit, wherein the AD data sampling unit comprises a first AD sampling circuit, a second AD sampling circuit, a third AD sampling circuit and a fourth AD sampling circuit; the first AD sampling circuit is connected with a current sensor at an input end of a column supply cabinet; the second AD sampling circuit is connected with a voltage sensor at the input end of the column supply cabinet; the third AD sampling circuit is connected with a current sensor at an output end of the column supply cabinet; the fourth AD sampling circuit is connected with a voltage sensor at the output end of the column supply cabinet; output ends of the first, second, third, and fourth AD sampling circuits are connected with the processing unit; the processing unit is connected with a control end of the column supply cabinet; and the processing unit is connected with a central control unit of a locomotive network through the communication unit. The column management unit can precisely control an output voltage and current of a column power supply.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a centralized train supply management unit and system based on four-quadrant control. Background technique [0002] With the rapid development of my country's locomotive industry, more and more requirements are put forward for various accessories in locomotives. The power supply cabinet is used to provide power for passenger cars in passenger locomotives, and the quality of its output power has attracted more and more attention. , the traditional passenger locomotive train supply device mainly collects the input voltage, input current, output voltage and output current of the train supply through the sampling circuit, and performs corresponding voltage and current adjustment and overvoltage and overcurrent protection. However, Since the existing train supply cabinet does not have a train supply management unit, it is impossible to accurately obtain the voltage and current at the input a...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's locomotive industry, more and more requirements are put forward for various accessories in locomotives. The power supply cabinet is used to provide power for passenger cars in passenger locomotives, and the quality of its output power has attracted more and more attention. , the traditional passenger locomotive train supply device mainly collects the input voltage, input current, output voltage and output current of the train supply through the sampling circuit, and performs corresponding voltage and current adjustment and overvoltage and overcurrent protection. However, Since the existing train supply cabinet does not have a train supply management unit, it is impossible to accurately obtain the voltage and current at the input and output terminals of the train supply cabinet, and furthermore, it is impossible to accurately control the voltage input from the train supply cabinet to the bus inverter device, which is easy Causes fluctuations in power supply in trains

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