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Converter valve assembly and its igbt sub-module for flexible direct current transmission

A technology of flexible direct current transmission and converter valves, which is applied in the direction of electrical components, electrical solid devices, circuits, etc., can solve problems such as complex installation structures, achieve the effects of improving reliability, improving heat dissipation environment, and simplifying press-fitting and fixing structures

Active Publication Date: 2018-03-02
XJ ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an IGBT sub-module to solve the technical problem of a relatively complicated single-module plug-in installation structure in the prior art; at the same time, the present invention also provides a flexible DC power converter using the above-mentioned IGBT sub-module valve assembly

Method used

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  • Converter valve assembly and its igbt sub-module for flexible direct current transmission
  • Converter valve assembly and its igbt sub-module for flexible direct current transmission
  • Converter valve assembly and its igbt sub-module for flexible direct current transmission

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Embodiment Construction

[0031] Such as figure 1 Shown, a kind of embodiment of IGBT submodule, the submodule in this embodiment includes 2 IGBT198, 3 radiators and 1 thyristor 199, and 3 radiators are right radiator 191, middle radiator 192 and The radiator 193 on the left side, 2 IGBTs and 3 radiators are arranged at intervals along the left and right directions, one thyristor 199 is arranged outside the radiator 191 on the right side, and the veneers corresponding to the 2 IGBTs are fixedly mounted on the radiator On the corresponding side of the radiator, the thyristor 199 is fixedly installed on the outer surface of the right radiator 191 with a corresponding veneer, and the right side of the thyristor 199 is provided with a conductive aluminum bar for cooperating with the right radiator 191 to clamp the thyristor 199. 190. Wherein, a resistor 194 is fixedly mounted on the left side radiator 193 . Moreover, sub-module control circuits 195 are also fixedly installed on the three radiators.

[0...

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Abstract

The invention provides a converter valve assembly for flexible direct current transmission and its IGBT sub-module. The converter valve assembly includes a mounting frame, and a sub-module crimping unit is fixed at the front of the mounting frame. The sub-module crimping unit includes an intermediate frame and two At least two sub-modules arranged alternately along the left and right directions and insulation blocks between the modules are installed on the end plate and the middle frame. Two clamping devices are arranged on the two end plates, and each sub-module includes 2 IGBTs and 3 radiators And 1 thyristor, 2 IGBTs and 3 radiators are arranged at intervals along the left and right direction, 1 thyristor is set on the outer side of the rightmost radiator, and the corresponding thyristor is fixedly installed on the outer surface of the rightmost radiator , the right side of the thyristor is provided with a conductive aluminum row for cooperating with the rightmost radiator to clamp the thyristor. Through the two clamping devices in the sub-module crimping unit, multiple sub-modules can be crimped in series, which can effectively simplify the press-fitting and fixing structure of the sub-modules in the entire converter valve assembly.

Description

technical field [0001] The invention relates to a converter valve assembly for flexible direct current transmission and an IGBT sub-module thereof. Background technique [0002] Flexible DC transmission technology is a new type of DC transmission technology based on voltage source converters, turn-off devices and pulse width modulation technology. Compared with the traditional current-source DC transmission technology based on thyristors, the flexible DC transmission technology uses a fully-controlled power electronic device IGBT, which has fast system response, good controllability, flexible operation mode, and can reduce the short-circuit capacity of the system. Improve power quality. It has obvious advantages in renewable energy grid connection, distributed generation grid connection, island power supply, urban power grid power supply, etc. [0003] The existing domestic and foreign flexible DC transmission converter valve sub-modules mostly adopt a single-module indepe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/18H01L23/34H01L23/495
Inventor 朱新华张承李华君李申王艳毛志云王健云于丽阳
Owner XJ ELECTRIC
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