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A backup power supply system

A technology of power supply system and air conditioning system, applied in the field of rail transit vehicles, can solve problems such as affecting the operation of vehicles, tight space on the head of vehicles, and inability of vehicles to run.

Active Publication Date: 2017-01-18
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the auxiliary inverter fails, the air conditioner and traction fan will lose power. After the air conditioner loses power, the traction system cannot be cooled. At this time, the traction system will realize over-temperature protection and stop working, causing the vehicle to fail to run
[0003] In low-floor vehicles, the distance between the bottom of the vehicle and the track is very small, and the traction system, auxiliary system, control system and air-conditioning equipment of the vehicle need to be installed on the roof. The space on the top of the vehicle is very tight, and the auxiliary system design of the vehicle cannot be powered by expansion. Or set up multiple sets of auxiliary inverters to provide redundant power supply in case of failure, so once the auxiliary system fails, it will directly affect the operation of the vehicle

Method used

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0034] The invention provides a standby power supply system, such as figure 1 Shown is a schematic diagram of the system structure, including:

[0035] High voltage power supply 101, auxiliary inverter 102, air conditioning system 103 and traction fan 104;

[0036] in:

[0037] The auxiliary inverter 102 is provided with a first DC / DC module 105, a first DC / AC module 106, a second inverter module 107 and a first normally closed AC contactor 108;

[0038] On...

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Abstract

The invention discloses a standby power supply system which comprises a high-voltage power source, an auxiliary inverter, an air conditioning system and a traction fan. A first normally closed alternating-current contactor keeps closed when the auxiliary inverter works normally, a fourth inversion module of a power supply module of the auxiliary inverter supplies power for the traction fan, a second normally closed alternating-current contactor simultaneously keeps closed, a first inversion module of a power supply module of the air conditioning system supplies power for an air conditioning fan, and a normally open alternating-current contactor is in an open state; the first normally closed alternating-current contactor and the second normally closed alternating-current contactor are open when the auxiliary inverter fails and cannot provide power for the traction fan, then the normally open alternating-current contactor is closed, and the first inversion module of the power supply module of the air conditioning system provides power for the traction fan. The standby power supply system has the advantage that redundant power supply effects can be realized by the standby power supply system without increasing auxiliary inverters when the auxiliary inverter fails.

Description

technical field [0001] The invention relates to the field of rail transit vehicles, in particular to a backup power supply system. Background technique [0002] In existing rail transit vehicles, the vehicle supplies power for air conditioners and traction fans through a proprietary auxiliary inverter. When the auxiliary inverter fails, the air conditioner and traction fan will lose power. After the air conditioner loses power, the traction system cannot be cooled. At this time, the traction system will realize over-temperature protection and stop working, causing the vehicle to fail to run. [0003] In low-floor vehicles, the distance between the bottom of the vehicle and the track is very small, and the traction system, auxiliary system, control system and air conditioner of the vehicle need to be installed on the roof. The space on the top of the vehicle is very tight, and the auxiliary system design of the vehicle cannot be powered by expansion. Or set up multiple sets ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00
CPCY02T10/72
Inventor 邓谊柏李跃中索建国柳晓峰张宇尚江傲司尚卓
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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