Laminated busbars and frequency converter

A technology of laminated busbars and frequency converters, which is applied in the direction of output power conversion devices and electrical components, can solve problems such as complete machine failure, and achieve the effects of improving electrical clearances, creepage distances, and insulation performance

Active Publication Date: 2014-04-02
SHENZHEN SINE ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a laminated busbar that can enhance the insulation performance and thus improve the reliability of use in view of the defect that the laminated busbar in the above-mentioned frequency converter in the prior art is prone to failure during use. Bus bars and frequency converters

Method used

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  • Laminated busbars and frequency converter
  • Laminated busbars and frequency converter
  • Laminated busbars and frequency converter

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Embodiment Construction

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0030] Such as figure 1 , figure 2 as well as image 3 As shown, the preferred embodiment of the present invention provides a laminated bus bar for connecting the IGBT module 1 and the capacitor 2 . The laminated bus bar includes a positive bus bar 3 , a negative bus bar 4 , an insulating plate 5 , a series-parallel bus bar 6 , a first connecting piece 7 , a second connecting piece 8 and a third connecting piece 9 .

[0031] Specifically, such as figure 1 as well as figure 2 As shown, the laminated bus bar is used to connect multiple IGBT modules 1 and multiple capacitors 2 . In this embodiment, the IGBT modules 1 have a sheet structure, and the number is three, and the three IGBT modules 1 are arranged in a stra...

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PUM

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Abstract

The invention discloses laminated busbars and a frequency converter. The frequency converter comprises the laminated busbars, wherein the laminated busbars comprise a positive busbar, a negative busbar and an insulating plate mounted between the positive busbar and the negative busbar; the negative busbar comprises a first connecting part used for connecting an IGBT (Insulated Gate Bipolar Transistor) module, and a second connecting part used for connecting a capacitor; the side, close to the IGBT module, of the negative busbar and/or the side, close to the capacitor, of the negative busbar are bent to the direction which is deviated from the positive busbar, so that a gap used for improving the creepage distance between the positive busbar and the negative busbar is formed between the first connecting part and the insulating plate and/or between the second connecting part and the insulating plate. The implementation of the laminated busbars and the frequency converter has the benefits that the laminated busbars adopt the structure that the side, close to the IGBT module, of the negative busbar and/or the side, close to the capacitor, of the negative busbar are bent to the direction which is deviated from the positive busbar, so that the creepage distance and the electric clearance between the positive busbar and the negative busbar can be improved.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, and more specifically, to a laminated bus bar and a frequency converter. Background technique [0002] Laminated busbar is a multi-layer composite structure connection bar. Compared with traditional, bulky, time-consuming and troublesome wiring methods, the use of composite busbars can provide modern, easy-to-design, fast-installation and clear-structured distribution. electrical system. Laminated busbars have the characteristics of repeatable electrical performance, low impedance, anti-interference, good reliability, space saving and simple and quick assembly. [0003] IGBT (Insulated Gate Bipolar Transistor) power modules are common power modules used in inverters and other fields. In the prior art frequency converters, laminated busbars are used to connect IGBT modules and capacitors. During long-term use, dust in the environment tends to accumulate in the laminated busbars, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00
Inventor 张荣亮郑延
Owner SHENZHEN SINE ELECTRIC
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