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A parallel sub-module for flexible direct current transmission

A flexible DC power transmission and sub-module technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems of inconvenient maintenance of the system, scattered sub-module structure layout, etc., to achieve easy installation and component replacement, easy quality control, pressure uniform effect

Active Publication Date: 2015-08-26
XJ ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a parallel sub-module for flexible direct current transmission to solve the problem that the existing sub-module structure is scattered and the system is not easy to maintain

Method used

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  • A parallel sub-module for flexible direct current transmission
  • A parallel sub-module for flexible direct current transmission
  • A parallel sub-module for flexible direct current transmission

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Embodiment Construction

[0032] Such as figure 2 Shown is the overall structural diagram of the flexible direct current transmission sub-module of the present invention. It can be seen from the figure that the sub-module includes a capacitor 1, two IGBT power units and two main busbars; each IGBT power unit includes a radiator 17, a parallel More than two IGBT modules 8 and their control loops 3, the radiator is a plate radiator, the IGBT modules 8 on each power unit are installed side by side on a panel of the corresponding panel radiator 17, and the control loop is correspondingly installed on the panel On the other board of the radiator, each IGBT power unit also includes a composite busbar 18, the composite busbar is connected to the surface of the corresponding IGBT module away from the plate radiator, and the composite busbar is provided with a The outlet end of the corresponding connection of the busbar, the capacitor connection end for connecting to the capacitor, and the connecting terminal ...

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Abstract

The invention discloses a parallel sub-module for VSC-HVDC (voltage source converter high voltage direct current). The parallel sub-module comprises a capacitor, two IGBT power units and two main busbars. Each IGBT power unit includes a radiator, more than two IGBT modules which are connected in parallel and a control loop thereof, wherein the IGBT modules on each power unit are disposed side by side on a plate surface of the corresponding plate-shaped radiator, and the control loop is correspondingly disposed on the other plate surface of the plate-shaped radiator. Each IGBT power unit further includes a composite busbar which is in adhesion connection with a surface that is far away from the plate-shaped radiator of a corresponding IGBT module. The parallel sub-module for VSC-HVDC adopts modular design and is compact in the designed structure and reasonable in layout, every part of the sub-module can be independently assembled, and thus assembly efficiency of the sub-module is substantially improved, and convenience are brought to quality control of the whole assembly process, installation of the sub-module and replacement of elements, and installation and dismounting of the sub-module.

Description

technical field [0001] The invention belongs to the application field of power semiconductor components, such as flexible direct current transmission, high-power power electronic rectification and inverter devices such as SVG, and specifically relates to a parallel sub-module structure for flexible direct current transmission. Background technique [0002] Flexible DC transmission is a new generation of DC transmission technology with voltage source converter as the core. It adopts the most advanced voltage source converter and full control devices, which is an upgrade of conventional DC transmission technology. Compared with AC transmission and conventional DC transmission, it can flexibly adjust the voltage of the AC system connected to it while transmitting energy. It has obvious advantages such as good controllability, flexible operation mode, and many applicable occasions. Therefore, flexible DC transmission technology has high application value in island power supply, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/07H01L23/48
CPCH01L2924/0002
Inventor 姚为正张建朱新华肖晋游伟毛志云贾艳玲谢云龙
Owner XJ ELECTRIC