Two-side water cooling substrate of power module of current transformer

Abstract

The invention relates to the field of railway locomotive, electricity multiple unit and industrial control, in particular to a cooling technology of large-power current transformers, i.e. a two-side water cooling substrate of a power module of a current transformer. The invention solves the problem that the traditional heat sink of the power module of the large-power current transformer has the defects of large size, poor cooling effect and high producing cost. The two-side water cooling substrate is connected with a circulating water system of the current transformer and comprises a cooling substrate which is formed by brazing an upper cover plate and a lower substrate; the end surface of the lower substrate is provided with a connecting water channel and a water inlet and a water outlet of external circulating water; installation holes are arranged on the external surfaces of the upper cover plate and the lower substrate; and the internal surface of the lower substrate is provided with a groove-shaped water channel in which square wave shaped fins are arranged, wherein the fins are bent regularly. The two-side water cooling substrate can realize two-side water cooling, which reduces the heat resistance of the cooling substrate and increase the cooling efficiency on one hand, and lowers the difficulty of the producing process and reduces the producing cost on the other hand.

Description

technical field [0001] The invention relates to the field of railway locomotives, EMUs and industrial control, in particular to the cooling technology of high-power converters, in particular to the double-sided water-cooled heat dissipation substrate of the converter power module. Background technique [0002] With the rapid development of power electronics technology, high-power converters have been widely used. As the core component of the converter, the cooling technology of the power module is very critical, which directly affects the reliability of the converter operation. The main cooling methods of the existing power modules are: natural cooling, forced air cooling, heat pipe cooling, oil circulation cooling, water circulation cooling, boiling cooling, etc. Among them, the water circulation cooling has good cooling effect and small size of heat dissipation substrate, especially can be used with Other components that need to be cooled in the system share the same water...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of the existing high-power converter power module radiator, the volume is too large, the heat dissipation effect is not good, the manufacturing process is complicated and the cost is high, and a new type of converter power module double-sided water-cooled heat dissipation substrate is provided.

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