Novel integrated power supply and auxiliary transmission system

An auxiliary transmission and auxiliary system technology, applied in the field of rail transit, can solve problems such as reliability improvement, traction system shutdown, and large topology loss, so as to save step-down chopper inductors, reduce system losses, and reduce electromagnetic interference Effect

Pending Publication Date: 2022-04-05
CRRC YONGJI ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The two-level topology has a large loss, and the train supply and auxiliary power supply systems are separated; if the traction system of this group is abnormal, the entire auxiliary power supply system will be shut down, resulting in the overall shutdown of the traction system. The reliability of this scheme needs to be improved

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  • Novel integrated power supply and auxiliary transmission system
  • Novel integrated power supply and auxiliary transmission system
  • Novel integrated power supply and auxiliary transmission system

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Embodiment Construction

[0020] The following will be combined with figure 1 , figure 2 and image 3 The technical solutions of the present invention are clearly and completely described, and obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "first" and "second" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0022]In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable con...

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Abstract

The invention belongs to the technical field of rail transit, and particularly relates to a novel integrated power supply and auxiliary transmission system, which solves the technical problems in the background technology, and comprises a train supply system and an auxiliary system, the input ends of the two column supply units respectively take power from two groups of different intermediate buses of a traction converter on a traction system, and the output ends of the two column supply units are connected through a main circuit breaker, so that independent power supply or combined power supply can be realized; and the output ends of the two column supply units are respectively connected to the charging interface and the auxiliary system. According to the structure, a step-down chopping inductor is omitted, the characteristics under two-level high switching frequency can be achieved under low switching frequency, meanwhile, the influence of electromagnetic interference is reduced, good harmonic characteristics and dynamic performance are achieved, high adaptability and flexibility are achieved, meanwhile, the system has the double-input characteristic, and the system is suitable for large-scale popularization and application. A middle bus power taking mode adopts two middle buses to take power at the same time in a double-input mode, and the operation reliability of the whole system is improved.

Description

technical field [0001] The invention belongs to the technical field of rail transit and relates to a power supply transmission system, in particular to a novel integrated power supply and auxiliary transmission system. Background technique [0002] Converter systems in the field of rail transit are divided into two types, one is the traction system, and the other is the auxiliary transmission system; the auxiliary transmission system has two main circuit topologies, one is that the secondary side of the transformer takes power, and it is rectified to the auxiliary transmission system. The power supply system provides the required level of intermediate voltage; the other is the form of taking power from the traction system intermediate bus, which directly takes power from the traction system, eliminating the need for a separate rectifier, and has the characteristics of small size and strong weight. The field of motor vehicles with high weight requirements. [0003] In practi...

Claims

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Application Information

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IPC IPC(8): H02M5/458H02M3/335H02M7/5387H02M1/088H02M1/12H02M1/44B60L1/00
Inventor 詹哲军于森林赵芳苏鹏程王天博王岩
Owner CRRC YONGJI ELECTRIC CO LTD
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