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Converter and heat dissipation system thereof

A technology of heat dissipation system and converter, applied in control/regulation system, conversion of AC power input to DC power output, instruments, etc., can solve the problems of high cost, heavy weight, large size of power frequency transformer TH, etc. Low, lightweight and compact effect

Inactive Publication Date: 2019-11-22
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power frequency transformer TH itself has the problems of large size, heavy weight and high cost.
At the same time, this way of directly taking power from the grid will inevitably lead to overvoltage damage to the cooling fan due to abnormal vibrations of the grid and lightning surges on the grid side.

Method used

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  • Converter and heat dissipation system thereof
  • Converter and heat dissipation system thereof
  • Converter and heat dissipation system thereof

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] see figure 2 , the embodiment of the present invention discloses a converter heat dissipation system, including a cooling fan 100, a non-isolated DC / DC conversion module 200, and an insulation unit for realizing the isolation and insulation between the cooling fan 100 and the structural parts of the converter. Material 500, of which:

[0038] The power input end of the non-isolated DC / DC conversion module 200 is connected to the DC bus in the main cir...

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Abstract

The invention discloses a converter and a heat dissipation system thereof, so as to realize the design of the heat dissipation system of the current transformer with small volume, light weight and lowcost and avoid the overvoltage damage of a heat dissipation fan. The heat dissipation system comprises a heat dissipation fan, a non-isolated DC / DC conversion module and an insulating material used for realizing isolation and insulation of the heat dissipation fan and a converter complete machine structural member, wherein the electric energy input end of the non-isolated DC / DC conversion moduleis connected to a direct-current bus in the converter main circuit, and the electric energy output end of the non-isolated DC / DC conversion module is connected to the power supply end of the cooling fan and used for converting the voltage of the direct-current bus in the converter main circuit into the direct-current voltage required by the cooling fan.

Description

technical field [0001] The invention relates to the technical field of power electronics, and more specifically, to a converter and a heat dissipation system thereof. Background technique [0002] A converter is an electrical device that changes the voltage, frequency, phase number, and other power or characteristics of a power system. Common converters include rectifiers and inverters. [0003] Converters usually need to use cooling fans to effectively dissipate heat for the internal power modules, especially for high-voltage and high-power converters (generally above 200KW), the internal power modules generate a lot of heat, so larger fans are needed. Power cooling fan (generally 1KW and above) to achieve better cooling effect. [0004] At the present stage, the cooling fans of converters, especially high-voltage and high-power converters, are generally powered by three-phase AC power, such as figure 1 As shown, the power grid voltage is isolated and regulated by the pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H02M7/00H02M3/156H05K7/20H02J3/38
CPCH02J3/381H02M1/00H02M3/156H02M7/00H05K7/20909
Inventor 王航王富李随军燕青
Owner SUNGROW POWER SUPPLY CO LTD
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