Flexible direct-current power transmission module giving consideration to multi-device and multi-working-condition heat dissipation

Abstract

The invention discloses a flexible direct current power transmission module giving consideration to multi-device and multi-working-condition heat dissipation, which comprises an IGBT working unit and a rectifier tube working unit, and is characterized in that the IGBT working unit comprises a heat dissipation module, IGBT devices, an explosion-proof baffle plate, a voltage-sharing resistor, a first disc spring assembly, a first insulating heat block and a first pressing frame; the first disc spring assembly, the heat dissipation module and the first insulating heat block are sequentially installed on the first pressing frame, the IGBT device and the voltage-sharing resistor are both installed on the heat dissipation module, the explosion-proof baffle is installed on the heat dissipation module and covers the side of the IGBT device, and the heat dissipation module is connected with the rectifier tube working unit. The size of the module structure is reduced; the efficiency of the flexible direct-current power transmission module radiator is improved, and the multi-device and multi-working-condition operation compatibility is improved; the mounting and dismounting operation difficulty is reduced, the working efficiency is improved, meanwhile, the pressure bearing requirement of structural components is reduced, and the reliability of structural functions is improved; and the application stability of the module system is improved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a flexible direct current power transmission module that takes into account the heat dissipation of multiple devices and multiple working conditions. Background technique [0002] Flexible DC transmission technology is a new type of DC transmission technology based on the turn-off semiconductor device IGBT (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor). It has strong technical advantages in increasing the system's ability to absorb clean energy and improving the reliability and flexibility of the distribution network. It has the advantages of good environmental protection, small footprint and low environmental impact, and is suitable for solar energy and other clean Application fields such as energy grid connection, island (passive load) power supply, and large-scale city power supply are important technical means to build a smart grid. [0003]...

AI Technical Summary

Problems solved by technology

[0004] The flexible direct current transmission module that adopts the form of individually matching the radiator of the power module and the electronic components one by one cannot realize high-voltage and high-current operation, and under the same operating conditions, the utilization rate of the heat dissipation structure is low, resulting in a relatively large valve volume , affecting the overall volume control of the flexible DC converter valve

However, when the flexible direct current transmission module adopts independent heat dissipation structure, when multiple devices operate at the same time or there are various working conditions, the heat dissipation waterway structure takes up a lot of space, resulting in a relatively complex design structure of the module and poor compatibility.

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