Centrosymmetric IGBT multi-module parallel connection device

Abstract

The invention relates to a centrosymmetric IGBT multi-module parallel connection device, which comprises a plurality of IGBT modules, a laminated busbar, a heat dissipation plate and a supporting plate, wherein the IGBT modules, the laminated busbar, the heat dissipation plate and the supporting plate form a compact STACK layout, so that the modular design is realized, the design of a high-power converter becomes simpler, the STACK heat dissipation performance is optimized through the center hollowed-out design of the laminated busbar, the heat dissipation plate and the supporting plate, the overall power connection layout is in central symmetry, electromagnetic coupling generated when the IGBT module is switched on and off is reduced, in addition, through the terminal layout of the laminated busbar, the parasitic impedance of each current branch is balanced, the current balance degree between the IGBT modules connected in parallel is improved, expandability is achieved, and series-parallel connection between STACKs is easier to achieve.

Description

technical field [0001] The invention relates to the field of high-power converters, in particular to a center-symmetric IGBT multi-module parallel device. Background technique [0002] The most important part of modern power electronic systems is semiconductor devices. Among them, the insulated gate bipolar transistor IGBT combines the advantages of the field effect transistor MOSFET and the power transistor GTR, and is used in high-power converter applications such as electrified railway converters. It is widely used in inverters, industrial motor drive systems, and offshore wind power converters. With the continuous improvement of power levels, on the one hand, although IGBT modules with higher withstand voltage and higher power have been ready-made products, the driving circuit design is relatively simple, but it also comes with a series of problems such as high price, inconvenient maintenance and reliability. Sexuality and other issues. Therefore, the parallel use of I...

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Problems solved by technology

With the continuous improvement of power levels, on the one hand, although IGBT modules with higher withstand voltage and higher power have been ready-made products, the driving circuit design is relatively simple, but it also comes with a series of problems such as high price, inconvenient maintenance and reliability. low sex issues

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