Novel direct current power circuit based on choke transformer

A technology of choke transformer and DC power supply, applied in the fields of power electronics and railway electrical, can solve the problem of difficulty in obtaining low-voltage power supply, and achieve the effect of improving overall reliability and informatization level, high efficiency and simple structure

Active Publication Date: 2015-05-06
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that the low-voltage power supply along the electrified railway is not easy to obtain. The present invention proposes a new type of DC power supply circuit based on a choke transformer, and provides a brand-new implementation plan for the technology of taking power without pulling wires.

Method used

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  • Novel direct current power circuit based on choke transformer
  • Novel direct current power circuit based on choke transformer

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Embodiment Construction

[0022] The embodiments of the present invention are further described with reference to the accompanying drawings.

[0023] figure 1 It is a schematic diagram of a choke transformer; one of the currents enters a set of coils on the primary side of the choke transformer from point A of the first rail, and then flows through the neutral point N of the primary side of the choke transformer to ground; another current is at point C of the second rail Enter another set of coils on the primary side of the choke transformer, and then flow through the neutral point N of the primary side of the choke transformer to ground; the secondary side 1 and 2 of the choke transformer provide low-voltage power supply to the train.

[0024] figure 2 It is a schematic diagram of a novel DC power supply circuit based on a choke transformer in this embodiment;

[0025] In the figure, 10 is a power supply unit based on a choke transformer; 20 is a filter circuit unit; 30 is a charger unit; 40 is a regulated...

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Abstract

A novel direct current power circuit based on a choke transformer comprises a power taking power unit (10) based on a choke transformer, a filtering circuit (20), a charger unit (30) and a stabilizing output unit (40). The choke transformer is utilized to acquire power, and an electric control means is finally utilized to obtain an expected low voltage power supply to meet the power requirements of various electric devices. The circuit has the charging storage capability, a special low voltage cable is not required to be laid, auxiliary devices like a support are not required to be erected, and a resolution scheme is flexible and easy to achieve, low in cost and less in maintenance. The circuit is simple, reliable and practical in structure. The system has high reliability and high efficiency, solves the problem that the low voltage power supply is not easy to acquire due to the fact that a cable is inconvenient to lay along the existing electrical railway, the optimum direct current power supply is provided for an electric device, the integral reliability and information level of the electrical railway system are improved by means of investment of the device, and the control and monitoring means are flexible.

Description

Technical field [0001] The invention relates to a new type of direct current power supply circuit based on a choke transformer, belonging to the technical field of railway electrical and power electronics. Background technique [0002] High-voltage lines are laid along the electrified railways, especially high-speed railways and high-speed trains, along with related settings. However, due to the lack of low-voltage power supplies, many low-voltage electrical equipment still cannot be connected for application, which greatly limits the automation and informatization of high-speed railways. Further improvement and improvement. [0003] In the electrified traction section, in order to ensure that the traction current flows smoothly through the insulation section, choke transformers are installed at the transmitting and receiving ends of the track circuit. The track circuit equipment is connected to the track through the choke transformer and transmits signal information. There ...

Claims

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Application Information

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IPC IPC(8): H02M7/04B60M7/00
CPCH02J5/005H02J7/025
Inventor 刘珺傅军栋马书研
Owner EAST CHINA JIAOTONG UNIVERSITY
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