Urban rail transit traction power supply system and train-network matched parameter optimizing method

A traction power supply system, urban rail transit technology, applied in electric braking systems, electric vehicles, AC network circuits, etc., can solve the problem that the regenerative braking capacity of trains has not been maximized, the comprehensive energy-saving rate of the system needs to be improved, and the impact on trains Problems such as line loss of regenerative braking capacity

Active Publication Date: 2019-07-26
BEIJING JIAOTONG UNIV +2
View PDF6 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The start-up threshold of the inverter voltage of the medium-voltage energy feedback device will affect the voltage distribution of the DC traction network, and then affect the regenerative braking capability of the train and the size of the line loss. However, the traditional ve

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Urban rail transit traction power supply system and train-network matched parameter optimizing method
  • Urban rail transit traction power supply system and train-network matched parameter optimizing method
  • Urban rail transit traction power supply system and train-network matched parameter optimizing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0107] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. 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.

[0108] The urban rail transit traction power supply system and the vehicle-network coordination parameter optimization method provided by the invention are suitable for urban rail transit vehicles such as subways and light rails. The invention reverses the DC electric energy generated by the regenerative braking of the vehicle to be tested into AC electric energy with the same amplitude and ph...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of traction power supply and relates to an urban rail transit traction power supply system and a train-network matched parameter optimizing method. The urban rail transit traction power supply system comprises N traction stations, a direct-current contact system, an alternate-current power grid, a track and M to-be-tested trains. By setting inversion voltage starting thresholds of medium-voltage energy feedback devices in the traction stations, direct-current power energy generated by regenerative brake of the to-be-tested trains is inverted into alternate-current power energy with the same amplitude and the same phase as a first alternate current, the regenerative brake ability of the trains is exerted to the greatest extent, and the minimum circuit loss is realized.

Description

technical field [0001] The invention belongs to the technical field of traction power supply, in particular to an urban rail transit traction power supply system and a vehicle-network coordination parameter optimization method. Background technique [0002] The subway traction power supply system uses 24-pulse rectification for power supply. Due to the disadvantage of the diode rectification method that energy can only flow in one direction, when the subway vehicle regeneratively brakes, excess energy will be generated (which cannot be absorbed by nearby vehicles). If it is not processed effectively, It will increase the voltage of the traction network, resulting in the reduction or even disappearance of the regenerative braking capability of the train. The traditional processing method is to consume this part of energy with a resistance energy consumption device, resulting in a waste of energy. [0003] With the development of power electronics technology, more and more su...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B60M1/12B60L7/10H02J5/00H02J3/06
CPCB60M1/12B60L7/10H02J5/00H02J3/06H02J2203/20Y02T10/72
Inventor 陈杰刘志刚郝峰杰张钢邱瑞昌苏光辉田雨牟富强魏路吕海臣漆良波
Owner BEIJING JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap