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No-fire-return implementing external power supply device and method

A fire-free return and contact technology, applied in the field of rail transit, can solve problems such as the inability of auxiliary equipment to work, and achieve the effects of convenient installation and disassembly, simple maintenance, and simple and clear interface.

Active Publication Date: 2018-01-26
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fixed an issue where auxiliary equipment would not work when the electric locomotive was returning without fire

Method used

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  • No-fire-return implementing external power supply device and method
  • No-fire-return implementing external power supply device and method
  • No-fire-return implementing external power supply device and method

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Embodiment Construction

[0023] The following will combine image 3 The flameless return device of the first embodiment of the present application will be described.

[0024] The non-fire loopback device 1 of the present application is an external power supply device for realizing non-fire loopback, including: a first inverter 11, a second inverter 12, a control module 13, a DC / DC converter 14, a storage battery 15, The first switch 41 and the second switch 42 ; the first end of the first inverter 11 is connected to the first contact 51 between the main traction converter 21 and the main traction motor 31 through the first switch 41 . The second end of the first inverter 11 is connected to the first DC bus. The output end of the storage battery 15 is connected to the first end of the DC / DC converter 14 . The second end of the DC / DC converter 14 is connected to the first DC bus. The input end of the second inverter 12 is connected to the first DC bus. The output end of the second inverter 12 is con...

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Abstract

Disclosed is a no-fire-return device (1) and method. The no-fire-return device is of an external power supply device comprising a first inverter (11), a second inverter (12), a control module (13), aDC / DC (direct current / direct current) transformer (14), a storage battery (15), a first switch (41) and a second switch (42); one end of the first inverter (11) is connected with contacts (51) betweena main traction converter (21) and a main traction motor (31) through the switch (41) while the other end is connected with a direct-current bus; the storage battery (15) is connected with on end ofthe DC / DC transformer (14) while the other end is connected with the direct-current bus; one end of the second inverter (12) is connected with the direct-current bus while the other end is connected with contacts (52) between on-board auxiliary equipment (32) and an on-board auxiliary inverter (22) through the second switch (42). The no-fire-return device (1) is arranged independent of the exterior of a locomotive, energy can be provided for auxiliary load of the locomotive in no-fire-return of the locomotive through pre-excitation, of the main traction motor (31), provided by the storage battery (15) and by converting mechanical energy to electricity by the main traction motor (31) in a brake mode namely a generator mode, use of energy of the on-board storage battery is not needed, a vehicle body does not need to be modified, and the device can be used upon connected.

Description

technical field [0001] The present application relates to the field of rail transit and the field of power electronics technology, in particular to a method and device suitable for non-fire return of rail transit vehicles, and a device for power supply to vehicles during non-fire return. Background technique [0002] In the field of rail transit, trains generally use main and auxiliary integrated converters, such as figure 1 As shown, the main traction converter is connected to the main motor M driving the vehicle, and the auxiliary converter is connected to auxiliary loads and batteries. The auxiliary loads include air conditioning, lighting, and control systems. The so-called main and auxiliary integrated converter means that the power of the main traction system and auxiliary system of the train comes from the same DC power supply, which can be figure 1 The AC / DC converter in the train, when the main traction system of the train fails to work due to failure and other rea...

Claims

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Application Information

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IPC IPC(8): B60L9/04B60L1/00H02J1/00B61C17/00
CPCY02T10/72
Inventor 郝瑞祥王琛琛王剑周明磊游小杰郭希铮宋国兴
Owner BEIJING JIAOTONG UNIV
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