Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Overvoltage chopped wave energy consumption balance control system applied to train

A technology of energy balance and control system, which is applied in electric braking systems, electric vehicles, vehicle components, etc., and can solve the problems of reduced passenger capacity of subway trains, unbalanced energy consumption of overvoltage chopping, and electric shocks of maintenance personnel.

Active Publication Date: 2016-07-06
ZHUZHOU CSR TIMES ELECTRIC CO LTD
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most of the working conditions in the train electric braking process are regenerative braking, and there is almost no resistance braking working condition, and it is difficult for the train to have the problem of unbalanced energy consumption of overvoltage chopping
However, although the technical solution in this paper adopts the supercapacitor energy storage absorption device, although it can absorb the regenerative braking energy well, it makes the train less likely to enter the resistance braking condition during electric braking.
However, the discharge current and energy density of the supercapacitor energy storage absorption device are small, and it is difficult to release the energy when the train stops running, and it is easy to cause safety accidents of electric shock to maintenance personnel during maintenance.
The supercapacitor energy storage absorption device is generally heavy in weight and large in volume. The installation of the energy storage device will inevitably occupy the limited space of the subway train and increase the load of the train, resulting in a reduction in the passenger capacity and traction energy of the subway train. increase in consumption
Compared with the mature braking resistor energy-consuming energy consumption device, the supercapacitor energy storage type absorbing device is expensive, and the use of subway trains will easily lead to high costs

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
  • Overvoltage chopped wave energy consumption balance control system applied to train
  • Overvoltage chopped wave energy consumption balance control system applied to train
  • Overvoltage chopped wave energy consumption balance control system applied to train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] as attached figure 1 As shown, a specific embodiment of an overvoltage chopper energy balance control system applied to trains, the system includes: a train network control system 1 and a transmission control unit 2 . When the communication between the DCU of each motor car and the train network control system 1 is normal, the train network control system 1 obtains the operation data of each motor car through the transmission control unit 2, and dynamically adjusts the regenerative braking and resistance braking conditions of each motor car . As a preferred embodiment of the present invention, the train network control system 1 acquires the on-time of the chopper tube element 7 of the DCU from each motor car of the train through the MVB bus 3 . The train network control system 1 issues an overvoltage chopping threshold raising flag according to the energy consumption of the overvoltage chopping during the operation of each train, and the transmission control unit 2 adj...

Embodiment 2

[0094] For each car of the subway train, if under ideal conditions, or when the chopper energy consumption is balanced and it is in the braking condition, each motor car should be consumed by its own braking resistor 5. The energy fed back by the motor. Only when the chopper energy consumption is unbalanced, the energy fed back by the motor vehicle in this section is consumed by the braking resistor 5 of other vehicles, or the braking resistor 5 of the motor vehicle in this section consumes the energy fed back by other motor vehicles, so It will cause the brake resistor 5 of some cars to work little or even not work, while the brake resistor 5 of some other motor cars works frequently. In more extreme cases, the braking resistor 5 of some motor vehicles even continues to work, causing the braking resistor 5 to overheat due to rapid heating. For the direction of energy flow, its direct appearance is the direction of the intermediate DC current. For the main circuit, the wiring...

Embodiment 3

[0107]In the above-mentioned embodiment 1, a large-scale control of the entire vehicle can be realized through the overvoltage chopper energy balance control system based on the train network control system 1, but the real-time performance is poor, and the adjustment cannot be performed during this braking process. . In the above embodiment 2, the overvoltage chopper energy balance control system adjusts through the intermediate DC current, which can realize flexible adjustment during this braking process, which makes up for this shortcoming, but embodiment 2 also has an adjustment range small weakness. Therefore, in order to better realize the balanced control of overvoltage chopping energy consumption, the DCU (transmission control unit 2) will adjust the overvoltage chopping threshold raising sign given by the train network control system 1 and the intermediate DC current at the same time , to adjust the on / off threshold of the chopper tube element 7 in real time.

[0108...

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 discloses an overvoltage chopped wave energy consumption balance control system applied to a train. The system comprises a train network control system and transmission control units. The train network control system obtains running data of each motor train section through the corresponding transmission control unit and dynamically adjusts the regenerative braking and resistance braking working conditions of each motor train section. The train network control system sends out an overvoltage chopped wave threshold lifting mark according to the condition in the running process of each motor train section, each transmission control unit adjusts an overvoltage chopped wave opening / closing threshold in real time according to the corresponding overvoltage chopped wave threshold lifting mark and middle direct current, and overvoltage chopped wave energy consumption balance control is achieved. By the adoption of the overvoltage chopped wave energy consumption balance control system, the real-time performance is high, control is accurate, overvoltage chopped wave energy consumption balance control can be achieved under the working conditions of train electric braking, traction and idling, long-time and large-range chopped wave energy consumption balance control at a whole train level is guaranteed, the real-time performance and flexibility in the adjusting process can be taken into consideration as well, and safety of a chopped wave pipe element and a braking resistor is protected.

Description

technical field [0001] The present invention relates to the field of electrical control of rail transit, in particular to an overvoltage chopping energy balance control system applied to VVVF (Variable Voltage and Variable Frequency, short for variable frequency speed regulation system) of rail transit vehicles such as subway trains, urban rail trains, and light rail trains. . Background technique [0002] Subway trains have the advantages of large passenger capacity, fast travel speed, and high comfort, and are one of the important means to solve urban traffic problems. Subway trains are composed of multiple trains, generally 6 trains, 4 trains and 2 trailers. Each train has an independent frequency control system (hereinafter referred to as VVVF). The electric braking method is preferred in the braking process of the subway train, and the air braking method is only used when the electric braking force is insufficient or the braking stops. During the electric braking proc...

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): B60L7/22
Inventor 付玉豪毛康鑫郭维黄浩
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com