Traction converter and converter cabinet

By integrating the rectifier and inverter modules into the traction converter and decoupling the chopper components, the problem of differences in converter cabinet structure in intercity/suburban rail transit has been solved, achieving a standardized design with high integration and high power density, and reducing noise.

CN122456892APending Publication Date: 2026-07-24ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Patent Information

Application Number
CN202510084273.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-20
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In intercity/suburban rail transit equipment, the internal space of traction converters is limited, and the requirements for integration and power density are high. This leads to differences in the cabinet structure of converters with different circuit topologies and power levels, making it difficult to achieve standardized reuse of cabinet frames and noise reduction of the whole machine.

Method used

The highly integrated modular design integrates the rectifier module and the inverter module on a single integrated board, and decouples the chopper component from the traditional inverter module. Combined with a highly compatible structural layout, it enables standardized reuse of the cabinet frame and overall noise reduction for different topologies and power requirements.

Benefits of technology

It achieves standardized reuse of cabinet frames under different topologies and differentiated power requirements, improves power density, and reduces the number and structural redundancy through modular design, thereby reducing noise.

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Abstract

The embodiment of the present application relates to the field of rail transit, and discloses a traction converter and a converter cabinet, wherein a single-frame integrated circuit comprises a charging short-circuit circuit, a control integrated module, a chopper assembly and an intermediate support capacitor which are sequentially connected along the current transmission direction and independently arranged in space; the control integrated module comprises a rectifier module and an inverter module; the rectifier module and the inverter module are integrally arranged on an installation plate; two interfaces on the alternating current side of the rectifier module are connected to the secondary single-phase winding of a traction transformer, and the charging short-circuit circuit is arranged on the access path of the two interfaces; two interfaces on the direct current side of the rectifier module are connected to two interfaces on the direct current side of the inverter module; the alternating current side interface of the inverter module is connected to the alternating current ports of two traction motors on the same bogie; the chopper assembly and the intermediate support capacitor are respectively connected in parallel between the two interfaces on the direct current side of the inverter module. The scheme can realize the standardization reuse of the cabinet body framework, the high power density of the cabinet body and the noise reduction effect of the whole machine.
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