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Tram power feed system, power feed device and power storage device

A power storage device and power feeding technology, which is applied in the direction of power consumption devices, circuit devices, electric vehicles, etc., and can solve problems such as cost problems, reduced charge of power storage devices, and no power storage devices installed

Active Publication Date: 2017-06-23
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the case of the former technique of mounting the power storage device on the tram, there is not enough space for the tram of the monorail etc. to mount the power storage device thereon
In addition, installation of power storage devices as high-energy bodies on trams leads to increased risks such as fire
In particular, in transport systems such as monorails, there is also the risk of parts falling after modification work for the installation of power storage devices
[0007] In addition, in the case of the latter technique of providing the power storage device to the feeder side, for example, a power storage device of the overhead contact line direct coupling type generally needs to have a larger number of batteries connected in series, resulting in an increase in the size and cost of the entire power storage device
In addition, the movement of vehicles over long distances is difficult considering the voltage drop in the feeder
[0008] Note that in the case where the power storage device is not an overhead contact line direct coupling type but a type that supplies power to the feeder side through a converter, more power is consumed due to the switching loss of the converter
Therefore, the power storage device in this case rapidly reduces the amount of charge, and thus cannot obtain sufficient power supply at the time of power failure or the like
Therefore, it is conceivable to make the power storage device have a large capacity, but since many large-capacity power storage devices need to be arranged in a distributed manner, there is a problem in terms of cost

Method used

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  • Tram power feed system, power feed device and power storage device
  • Tram power feed system, power feed device and power storage device
  • Tram power feed system, power feed device and power storage device

Examples

Experimental program
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no. 1 example ＞

[0022] Such as figure 1 As shown, the tram power feeding system 10 in this embodiment is a DC feeding power feeding system, which feeds DC power to the tram 14 through the feeder 2 of a railway, a monorail, etc. Such as figure 1 As shown, the electric vehicle power feeding system 10 includes a power feeding control device (power feeding device) 15 , a power storage device 20 , and a monitoring device 25 that controls the power feeding control device 15 and the power storage device 20 in common.

[0023] For example, the feed control device 15 is installed every 5 kilometers of railways, monorails, etc. or every station. Such as figure 1 As shown, the feeding control device 15 mainly includes an AC circuit breaker 12, a transformer 7, a standard power circuit breaker 6, an emergency power source 8 (the power source of the second power system), an emergency power circuit breaker 22, a rectifier 16, a DC circuit The circuit breaker 23 serves as a power feeding facility.

[00...

no. 2 example ＞

[0053] Next, based on Figure 5 A second embodiment is described. Note that with figure 1 The same components shown in the first embodiment are in the Figure 5 are denoted by the same reference symbols, and their repeated descriptions will be omitted.

[0054] Such as Figure 5 As shown, the electric vehicle power feeding system 50 in this embodiment includes a feeding control device 55 instead of the feeding control device 15 included in the electric vehicle power feeding system 10 according to the first embodiment. The feed control device 55 includes a transformer 57 instead of the transformer 7 included in the feed control device 15 . The electric car power feeding system 50 uses a transformer 57 to jointly realize the voltage conversion of the AC power source 9 and the voltage conversion of the emergency power source 8 to reduce facilities. The transformer 57 converts the AC power of the AC power source 9 (the AC power of the first power system) or the power of the e...

no. 3 example ＞

[0057] Next, based on Image 6 A third embodiment is described. Note that with figure 1 The same components shown in the first embodiment are in the Image 6 are denoted by the same reference numerals, and their repeated descriptions will be omitted.

[0058] The electric vehicle power feeding system 70 according to this embodiment includes a feeding control device 75 instead of the feeding control device 15 included in the electric vehicle power feeding system 10 according to the first embodiment. The feed control device 75 includes an emergency power source 78 instead of the emergency power source 8 included in the feed control device 15 . As in the case of the first embodiment, when the AC power source 9 fails, the transformer 7 and the rectifier 16 are opened by the DC circuit breaker 23 in the feed control device 75 .

[0059] The emergency power supply 78 is connected to the feeder 2 without an intervening transformer, and is, for example, a power storage element com...

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PUM

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Abstract

A trolley electric power feed system in one embodiment includes a power storage device, a rectifier and an emergency power supply. The power storage device is connected to a feeder for the electric car. The rectifier converts AC power of the first power system to DC power and provides DC power to the feeder. The emergency power supply provides power to the feeder from a second power system different from the first power system.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from Japanese Patent Application No. 2013-167820 filed on August 12, 2013, the entire contents of which are hereby incorporated by reference. technical field [0003] Embodiments described herein relate generally to trolley power feed systems, power feed devices, and power storage devices. Background technique [0004] In transportation systems such as railways, monorails, etc. that allow electric cars to travel by a direct current feeding method, when a direct current substation as a power supply source fails, electric cars that can no longer receive electric power become unable to travel in some cases. Therefore, in order to secure power supply for traveling in the event of a power failure or the like, there has been proposed a technique in which a power storage device is mounted on an electric car so that the electric car travels by the power of the power storage devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60M3/00B60M3/06H02J9/04
CPCB60L3/0092B60L9/08B60L2200/26B60M3/02B60M3/06Y02T30/00
Inventor 野木雅之佐竹信彦
Owner KK TOSHIBA