DC power supply for iegt power modules

Abstract

The invention relates to a direct-current draw-out power supply of an IEGT power module in the field of high-power electric and electronic converters. A main circuit comprises a filter circuit, a non-isolated flyback converter and an isolated push-pull converter. After input high-voltage direct-current electric energy is filtered through the filter circuit, first-stage conversion is performed on electric energy signals through the non-isolated flyback converter, bus high voltages are converted into DC400V electric signals, filtering processing is performed on the electric signals, then second-stage conversion processing is performed on the electric signals through the isolated push-pull converter, and finally a high-location draw-out power supply can output DC15V electric signals stably and safely after full-wave rectification is performed on the electric signals through a rectifying circuit (picture 4). The draw-out power supply can output direct-current input voltages within the range of 300Vdc-3700Vdc, and can be cooled naturally, provide electricity for operation of the IEGT power module and run safely and reliably in a complicated electromagnetic field environment.

Description

technical field [0001] The invention relates to a DC energy-taking power supply of an IEGT power module in the field of high-power electric electronic converters. Background technique [0002] The basic unit of a high-power multilevel cascaded converter is a power module, which consists of power modules connected in series. The topology of the power module is basically a DC / AC scheme, that is, to realize the conversion between DC (direct current) and AC (alternating current) energy. Capacitors are usually used for energy storage on the DC side. [0003] The core component of the power module is a high-power fully-controlled transistor, and the commonly used ones include IGBT, IEGT, and StakPak. At present, the domestic market is dominated by IGBT power modules. There is only one supplier for IEGT power modules, and there is currently no supplier for StakPak power modules. [0004] Each power module has its own control device and protection device. These devices all need p...

AI Technical Summary

Problems solved by technology

[0007] Comparison of the advantages and disadvantages of the above two energy harvesting methods: The advantage of DC energy harvesting is the application in the ultra-high voltage field, such as flexible DC power transmission converters, whose voltage often exceeds 100kV. In such a system, it is unrealistic to harvest energy from the ground Yes, the technology is difficult and the cost is high, DC energy harvesting is the only way

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