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Air-cooled converter power module system

An air-cooled converter and power module technology, which is used in output power conversion devices, cooling/ventilation/heating renovation, electrical components, etc. Fan failure has a greater impact, to eliminate the capacitor failure problem, large ripple current, and enhance scalability and reliability.

Active Publication Date: 2011-04-20
STATE GRID ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: due to the large number of components, it is difficult to form an air duct after the centralized arrangement of the power module, and the heat generated by the loss of components is not easy to dissipate. Considering the safe insulation distance, the volume of power unit modules is generally too large, which is not suitable for industries limited by space such as wind power industry

Method used

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  • Air-cooled converter power module system
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  • Air-cooled converter power module system

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Embodiment Construction

[0014] The present invention adopts a single bridge arm power module parallel structure, with figure 1 Shown is the parallel connection of six single-arm power modules (1) from top to bottom. Such as image 3 As shown, all modules are connected in parallel through the system positive DC busbar (4) and the system negative DC busbar (5) to realize integrated installation. The air ducts of each power module are placed in parallel, and the installation distance of the front and rear air ducts (2) (3) is consistent with the distance between the front and rear doors, forming an air duct independent of the space in the cabinet. The centrifugal fan behind the cabinet forms a front-to-back draft with The calorific value of the module when the converter is running.

[0015] Each single-arm power module includes an IGBT module (6) with an air-cooled radiator, an AC busbar (7), an absorbing non-inductive capacitor (8), a module positive DC busbar (9), and a module negative DC busbar...

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Abstract

The invention relates to an air-cooled converter power module system which is modularly designed and comprises a plurality of single-bridge arm power unit modules, system alternating current / direct current busbars and an integral air duct. The system comprises the single-bridge arm power unit modules (1), a module front air duct (2), a module back air duct (3), and a low inductance cascading busbar, wherein the single-arm bridge power unit modules (1) are electrically connected by the low inductance cascading busbar formed by combining the system positive direct current busbar (4) and the system negative direct current busbar (5). In the invention, the problem that the inside of the power unit module is slightly messy due to multiple devices is solved, and the modules form a separate air duct in a space inside a cabinet, thereby ensuring the cooling capacity and the minimum wind pressure loss.

Description

technical field [0001] The invention belongs to the technical field of semiconductor converters, and relates to a converter air-cooled power module system used in high-power converters. Background technique [0002] At present, high-power converters generally use a single converter bridge arm as a power unit module, which is assembled through external connections of the modules. At the same time, a single module is equipped with a single fan. The advantages of this mode are: flexible configuration, which can be configured as converters of different power levels through combination; modular structure, easy installation, and easy to achieve mass production. The disadvantages are: due to the large number of components, it is difficult to form an air duct after the centralized arrangement of the power module, and the heat generated by the loss of components is not easy to dissipate. Considering the safety insulation distance, the volume of power unit modules is generally too la...

Claims

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Application Information

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IPC IPC(8): H02M1/00H05K7/20
Inventor 朱喆吴明
Owner STATE GRID ELECTRIC POWER RES INST
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