An intelligent converter cooling system and intelligent cooling control method

Abstract

An intelligent converter cooling system and an intelligent cooling control method, the first cooling loop in the system includes a first variable pump that flows through a first inverter and a first rectifier and forms a loop through pipelines, a first cooling pipe , the first cooling medium tank, the first solenoid valve, the first heat exchanger, the second cooling circuit includes the second variable pump that flows through the second inverter and the second rectifier and forms a circuit through the pipeline, and the second cooling pipe , the second cooling medium tank, the second solenoid valve, the second heat exchanger, the first cooling circuit and the second cooling circuit all flow through the central control valve group; the control component controls the central control valve group through the monitoring signal of the sensor component to The switching of the working state of the first cooling circuit and / or the second cooling circuit is completed. The method is performed based on the system described above. The invention has the advantages of simple principle, good cooling effect, good energy saving effect and the like.

Description

technical field [0001] The invention mainly relates to the field of rail transit equipment, in particular to an intelligent converter cooling system and an intelligent cooling control method applicable to rail transit vehicles such as bullet trains. Background technique [0002] As the core component of the train electric traction system, the traction converter realizes the energy conversion and transmission between the traction transformer and the traction motor during the running of the train. Since the converter contains a large number of power devices, in the process of energy conversion and transmission, the power devices will generate a lot of heat, which needs to be dissipated through the cooling system, so a high-efficiency cooling system is the prerequisite for the normal operation of the converter ensure. [0003] At present, the cooling system of the EMU converter adopts water circulation or air circulation for cooling. There are only two working states of runnin...

AI Technical Summary

Problems solved by technology

However, it uses an open-loop control and cannot adjust the cooling effect

[0005] At present, the cooling system of the EMU converter can only work with the rated cooling power, and the cooling effect cannot be adjusted according to the actual working conditions.

Uneconomical and low cooling efficiency

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