Cascaded power bus bar used for magnetic suspending train wave cutter

Abstract

A laminated power bus bar for a levitation chopper of a maglev train, its insulating top plate, conductive positive plate, insulating partition plate, conductive negative plate and insulating bottom plate are stacked and bonded in sequence to form a motherboard; the motherboard There is a set of power terminal connection holes on the board that is compatible with the power terminal of the power module, including the positive polarity hole of the power terminal, the negative polarity hole of the power terminal and the output hole of the power terminal; Form connection hole pairs; all connection holes on the motherboard are tightly embedded with conductive rings, and there is an insulating ring between the positive polarity hole and positive hole of the power end and the negative plate of the motherboard; the negative polarity hole of the power end, the negative hole and the positive plate There is an insulating ring between them; there is an insulating ring between the conductive ring of the output hole of the power end and the positive and negative plates. The advantages are: less wiring in the levitation chopper, small space occupation, low installation and maintenance costs, good heat dissipation of power devices, effective suppression of mutual interference between components, and improvement of reliability of the levitation chopper for maglev trains.

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...

AI Technical Summary

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

Images