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Double-current brake vehicle power supply switching device, method and system

A technology of power supply switching and control device, which is applied to electric vehicles, conversion equipment that can be converted to DC without intermediate conversion, current collectors, etc. , the effect of reducing the number of cables and reducing costs

Inactive Publication Date: 2020-08-07
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing technical problems, the embodiment of the present application provides a device, method and system for switching power supply of dual-current braking vehicles, which can reduce the power supply cables between the transformer and the converter in the dual-current braking vehicle group, and solve the problem of power supply from the transformer to the transformer. The problem of difficult wiring between converters

Method used

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  • Double-current brake vehicle power supply switching device, method and system
  • Double-current brake vehicle power supply switching device, method and system
  • Double-current brake vehicle power supply switching device, method and system

Examples

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no. 1 example

[0050] see figure 1 , which is a schematic rectangular diagram of a device for switching power supplies for dual-current braking vehicles provided by the present application.

[0051] like figure 1 shown. The dual-current braking vehicle power supply switching device provided in this embodiment includes: a transformer 1000;

[0052] The transformer 1000 includes: a transformer body 100 and a built-in switching circuit 200;

[0053] The transformer body 100 includes a set of primary windings and two sets of secondary windings; the two sets of secondary windings include: a first set of secondary windings and a second set of secondary windings;

[0054] The built-in switching circuit 200 is used to switch the first group of secondary windings and the second group of secondary windings when the primary windings are connected to different power supplies, so that the switched secondary windings are connected to the Converter connection.

[0055] As an example: when the power su...

no. 2 example

[0058] A specific example will be used below to describe in detail the device for switching the power supply of a dual-current braking vehicle provided by the embodiment of the present application and its working principle.

[0059] see figure 2 , which is a schematic structural diagram of a dual-flow braking vehicle power supply switching device provided by a specific embodiment of the present application.

[0060]The device for switching the power supply of dual-current braking vehicles provided by this application includes: a transformer 1000;

[0061] The transformer 1000 includes: a transformer body 100 and a built-in switching circuit 200;

[0062] The transformer body 100 includes a group of primary windings u-v and two groups of secondary windings; the two groups of secondary windings include: the first group of secondary windings (S9-S1, S10-S3, S11-S5 and S12-S7 ) and the second set of secondary windings (S2-S1, S4-S3, S6-S5 and S8-S7);

[0063] The built-in swit...

no. 3 example

[0078] Based on the device for switching the power supply of the dual-current braking vehicle provided in the above embodiments, the embodiment of the present application also provides a method for switching the power supply of the dual-current braking vehicle.

[0079] The fault detection method provided in the embodiment of the present application is applied to the device for switching the power supply of the dual-current braking vehicle provided in the above embodiment.

[0080] see image 3 , which is a schematic flow chart of a method for implementing a dual-current braking vehicle power supply switching method provided by an embodiment of the present application.

[0081] The dual-current braking vehicle power supply switching method provided by this application includes:

[0082] S301: the built-in switching circuit built in the transformer receives the signal of power supply switching;

[0083] Specifically, the built-in switching circuit may be composed of a contact...

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Abstract

The invention discloses a double-current brake vehicle power supply switching device, method and system. The device comprises a transformer body and a built-in switching circuit. The transformer bodycomprises a group of primary windings and two groups of secondary windings; the two groups of secondary windings comprise a first group of secondary windings and a second group of secondary windings;and the built-in switching circuit is used for switching the first group of secondary windings and the second group of secondary windings when the primary winding is connected with different power supplies, so that the switched secondary windings are connected with the converter, power cables between the transformer and the converter are reduced, and the cable routing space in the bullet train issaved.

Description

technical field [0001] The present application relates to the field of motor vehicle power supply, and in particular to a device, method and system for switching power supply of dual-current braking vehicles. Background technique [0002] With the development of EMU technology, a decentralized power supply EMU, that is, a dual-flow braking train set, has emerged. There are two different power supply sources for this EMU, and the supply voltage and frequency of different power supply sources are also different. Therefore, the EMU needs to switch between two different power supply modes. [0003] In the prior art, a device for switching between different power supply modes is usually installed on a converter, and the switching device is controlled by a control device of the converter to realize switching of different power supply sources. The supply current of the power supply is first regulated by the transformer and then passed through the converter. The two different pow...

Claims

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Application Information

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IPC IPC(8): H02M5/32H02M5/10B60L1/00
CPCB60L1/00H02M5/10H02M5/32
Inventor 刘建城焦京海徐广伟刘飞毛瑞雷
Owner CRRC QINGDAO SIFANG CO LTD