Current transformer power module main body apparatus and its processing method

Abstract

The invention discloses a converter power module body device and a processing method thereof. The body device comprises a busbar body, an IGBT, an intermediate support capacitor and a surge absorption capacitor, and the busbar body is ' '-shaped, the intermediate support capacitor is fixed above the long side of the busbar body by a screw, the surge absorption capacitor is fixed inside the short side of the busbar body by a screw and the IGBT is fixed outside the short side of the busbar body by a screw. The processing method includes processing a copper plate into a copper bar with a boss and a hole, compounding insulating paper from multilayer Tyvek, arranging three pieces of insulating paper and three copper bars in sequence to be folded and pressed and forming the busbar body, and installing parts on the busbar body. Due to the advantages of convenient wiring, wiring space saving, convenient installation and disassembly and the reduction of stray induction on a main circuit, the body device facilitates the improvement of electrical property, thus enhancing the working stability of a converter system.

Description

technical field [0001] The invention relates to a converter power module main body device and a processing method thereof, especially for AC-DC conversion, DC-AC conversion, AC-DC conversion of railway locomotives, light rail cars, subway trains, magnetic levitation trains, and industrial frequency converters. - Main device of AC converter power module and processing method thereof. Background technique [0002] At present, the power supply products of converters developed by power electronic technology have been widely used in various fields such as electric power, military industry, industry, commerce, agriculture, etc. With the development of society and the progress of technology, converters are rapidly moving towards small size and large capacity. The direction of development, and the core of the electrical and structural aspects of the converter is the power module. The wiring method of the existing power module is to directly use cables as wires to connect the electr...

AI Technical Summary

Problems solved by technology

[0003] 1. It is very difficult to use cable wiring in a small and compact power module and it is difficult to bend and shape

[0004] 2. A large stray inductance is generated, which deteriorates the electrical performance of the main circuit

[0005] 3. Excessive IGBT turn-off overvoltage will easily damage the IGBT, thereby reducing the reliability and stability of the system

[0006] 4. Inconvenient to install and disassemble

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