External power supply topological structure applicable to urban rail transit noncontact power supply system

A technology of urban rail transit and power supply system, which is applied in the field of external power supply topology, can solve the problems of urban rail transit IPT technology application without detailed research and application examples, and achieve the effects of optimizing urban landscape, simplifying roof structure, and reducing costs

Pending Publication Date: 2018-08-14
SOUTHWEST JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of public transportation, some companies at home and abroad have researched and applied examples of IPT systems in automobiles a

Method used

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  • External power supply topological structure applicable to urban rail transit noncontact power supply system
  • External power supply topological structure applicable to urban rail transit noncontact power supply system
  • External power supply topological structure applicable to urban rail transit noncontact power supply system

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown in the figure, there is a non-contact power supply urban rail transit line with several traction substations SS. The primary side of the traction substation SS is connected to the mains AC 10kV, and the secondary side is DC 1500V or DC 750V output. The power supply cables between adjacent stations are connected to each other to form a DC distribution network. On the DC distribution network between adjacent traction substations SS, several switchgear boxes SDB are installed to convert DC power into high-frequency AC power. The electromagnetic transmitting coil generates an electromagnetic field in the air gap between the bottom of the train and the rail, and the electromagnetic pickup coil at the bottom of the train receives electric energy.

[0024] When the SS of the traction substation needs to be ...

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Abstract

The invention discloses an external power supply topological structure applicable to an urban rail transit noncontact power supply system. The external power supply topological structure mainly comprises a direct-current distribution network composed of traction substation SS, feed-forward cable A1 and feedback A2, switchgear boxes SDB and electromagnetic transmitting coils; the direct-current distribution network is connected to an input port of each switchgear box SDB on a power supply arm; an output port of each switchgear box SDB is connected to the corresponding electromagnetic transmitting coil; vehicular pickup coils mating with the electromagnetic transmitting coils are arranged at the bottom of a train. The external power supply topological structure has the advantages that a train based on the wireless power transmission principle can be powered and dependence of traditional urban rail transit on contact systems and pantographs can be decreased.

Description

technical field [0001] The invention relates to the field of urban rail transit application of wireless power transmission (IPT) technology, in particular to an external power supply topology used for a non-contact power supply system of urban rail transit. Background technique [0002] The proposal of wireless power transmission technology was originally for long-distance power transmission. In the research at that time, it was found that the dissipation of electromagnetic wave energy became more significant as the distance of energy transmission increased. In the past ten years, the electromagnetic coupling power transmission method is often used in research and application to transmit power to loads at relatively short distances (cm to m level). The power transmission efficiency can reach more than 85%, and the operability is good, and the on-off can be controlled at any time. [0003] Traditional urban rail transit generally uses DC system for power supply, the voltage...

Claims

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Application Information

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IPC IPC(8): B60L5/00B60M1/00
CPCB60L5/005B60M1/00B60L2200/26Y02T90/16Y02T10/72
Inventor 刘炜张宇赵佳微
Owner SOUTHWEST JIAOTONG UNIV
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