Intelligent converter cooling system and intelligent cooling control method

Abstract

The invention discloses an intelligent converter cooling system and an intelligent cooling control method. A first cooling loop in the system comprises a first variable pump, a first cooling pipe, a first cooling medium box, a first electromagnetic wave and a first heat exchanger which flow through a first inverter and a first rectifier and form the loop via pipes; a second cooling loop comprises a second variable pump, a second cooling pipe, a second cooling medium box, a second electromagnetic wave and a second heat exchanger which flow through a second inverter and a second rectifier and form the loop via pipes; both the first cooling loop and the second cooling loop flow through a middle control valve group; and a control assembly controls the middle control valve group via monitoring signals of a sensor assembly, to switch the working states of the first cooling loop and / or the second cooling loop. The method is executed on the basis of the system. The system and the method have the advantages of simple principle, good cooling effect and 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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