Rail transit converter air cooling system test device and method

Abstract

The invention relates to a rail transit converter air cooling system test device and method. The rail transit converter air cooling system test device comprises a test box, main air inlets are symmetrically formed in the positions, close to the first end, of the two side faces of the test box, wind shields with through holes are arranged in the test box, and radiators are fixedly arranged at the positions, right opposite to the main air inlets, of the exteriors of the two sides of the test box. A first fan is arranged in a fan mounting chamber formed between the two wind shields. An auxiliary transformer and a resonance reactor are arranged in the test box and close to the second end of the test box, and a first air outlet is formed in the bottom surface of the test box and close to the second end of the test box. The device is small in size, convenient to install and easy to operate, can be used for testing data under the independent action of an air cooling system, and is more convenient for deeply researching the attributes of the air cooling system.

Description

technical field [0001] The invention relates to the technical field of cooling of rail transit vehicles, in particular to a test device and a test method for an air cooling system of a rail transit converter. Background technique [0002] The power unit converter is an important high-mass electrical component on a high-speed EMU, and all functions of the traction converter, auxiliary converter and cooling unit are integrated in its box. Among them, the traction converter mainly includes traction control unit, power module, contactor, resonant capacitor, etc., the auxiliary converter mainly includes auxiliary transformer, resonant reactor, etc., and the cooling unit includes fan, radiator, water pump, cooling water pipe, etc. The air-cooling system part in the cooling unit can be used to air-cool the radiator, auxiliary transformer and resonance reactor in the auxiliary converter, and the power module in the traction converter can be water-cooled by using the water-cooling pa...

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Problems solved by technology

[0003] First, the entire test device is huge and the test method is complicated; at present, the power unit converter tends to be miniaturized gradually, with a high degree of integration and a small internal space, so it is difficult to arrange corresponding measuring points and carry out relevant test research; and now Some converter air-cooling system test data only have the air flow rate at the inlet of the cooling device, so only parameters such as air flow can be calculated

[0004] Second, the air-cooling system and the water-cooling system in the entire power unit converter will work at the same time. When the complete power unit converter is used for the test, the measured test data is the data under the joint cooling of the air-cooling system and the water-cooling system ; and in addition to the cooled devices that need air cooling, there will be other electrical devices that do not need air cooling in the dirty room, and the wind will flow through these electrical devices to some extent during the test; this makes the final measured data It is not the data under the simple action of the air cooling system, and it is impossible to accurately measure the quantitative data under the air cooling effect of the air cooling system on the cooled device alone

Therefore, the existing converter air-cooled system tests are not able to study the properties of the air-cooled system in depth

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