Cascaded power bus bar used for magnetic suspending train wave cutter

Abstract

The present invention relates to a cascade power bus bar for maglev train maglev choppers. An insulating top plate, a conductive positive plate, an insulating partition plate, a conductive negative plate and an insulating bottom plate are orderly stacked and bonded to form a motherboard. A power end connecting hole group adaptive to a power end of a power module is arranged on the motherboard, wherein, the power end connecting hole group comprises a power end positive polarity hole, a power end negative polarity hole and a power end output hole; a positive hole and a negative hole are also arranged on the motherboard and form a connecting hole pair; conducting rings are respectively inlayed in all connecting holes on the motherboard; the power end positive polarity hole, the positive hole and the negative plate of the motherboard are separated by insulating rings; the power end negative polarity hole, the negative hole and the positive plate are separated by insulating rings; the power end output hole, the positive plate and the negative plate are also separated by insulating rings. The cascade power bus bar has the advantages of ensuring few connecting lines in maglev choppers, occupying small space, having low installation and maintenance cost as well as good heat dissipation of power devices, effectively inhibiting mutual interference among devices and improving the reliability of maglev train maglev choppers.

Description

technical field [0001] The invention relates to a power bus bar used by a levitation chopper of a maglev train. Background technique [0002] The levitation chopper of the maglev train is an important part of the control system of the maglev train, and it is the key to ensure the normal levitation height of the maglev train, thereby ensuring the normal operation of the maglev train. The power module in the chopper of the maglev train, such as the insulated gate bipolar transistor (IGBT) module, is an indispensable key device in the chopper. During the use of the power module, it also needs to be connected with other components such as power supply and large capacitor. At present, the connection mode between the power module and other components in the suspension chopper is usually connected by wires and terminals. This method has the following problems: (1) Due to the large number of power terminals of multiple power modules, the number of wires to be connected is large, a...

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Problems solved by technology

This method has the following problems: (1) Due to the large number of power terminals of multiple power modules, the number of wires to be connected is large, and the installation process is time-consuming and laborious; (2) More wires occupy a larger chassis The internal space is not convenient for the installation of other electronic devices; (3) Too many connecting wires are prone to wiring faults, and the interference between components is also large, which will affect the reliability of the levitation chopper of the maglev train; at the same time, its daily maintenance is also difficult Very difficult; (4) The power module works under high current and high voltage, and the wiring is easy to form high temperature during the working process, which causes improper heat dissipation of the power device and affects the normal operation of the levitation chopper of the maglev train

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