A general high-voltage signal adapter for EMUs

Abstract

The invention relates to a general-type motor train unit high-voltage signal adapter. The adapter comprises an overhead line voltage converting unit CV, an overhead line current converting unit CC, a transformer input current converting unit TIC, a transformer output current converting unit TOC and a power module. The units above respectively comprise an acquisition module XXSM and a signal processing module XXPM. High-voltage alternating voltage signal and high-voltage alternating current signals are converted into general low-voltage direct current signals through the acquisition modules XXSM and the signal processing modules XXPM, thereby realizing matching of analog acquisition module interfaces of any high-voltage equipment supplier and network equipment supplier.

Description

technical field [0001] The invention relates to the field of electrical devices for railway vehicles, in particular to a general-purpose EMU high-voltage signal adapter. Background technique [0002] In order to ensure the realization of EMU control and safe and reliable operation, the train traction and network control system needs to conduct real-time detection of the high-voltage system catenary voltage signal, catenary current signal, traction transformer primary input current signal, traction transformer primary ground return current signal , and perform traction control and network logic control according to the detection value. [0003] The catenary voltage signal, catenary current signal, traction transformer primary input current signal, and traction transformer primary ground return current signal are all high-voltage AC signals or high-current AC signals, which cannot be directly collected and detected by the low-voltage control circuit. Therefore, these After th...

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Problems solved by technology

[0004] At present, the high-voltage system, traction system and network system are provided by different suppliers in the current running EMUs in my country. The design schemes of each supplier are different, and the high-voltage signal conversion methods and conversion amplitudes are different. Therefore, through the high-voltage signal collection and The protection methods of the high-voltage components of the trains implemented are not the same, and it is impossible to achieve a complete match between the various systems. The specific methods of high-voltage signal acquisition for various types of EMUs are shown in Table 1

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