Supercharge Your Innovation With Domain-Expert AI Agents!

Novel railway overhead contact system power taking power source purification device

A purification device and catenary technology, which is applied to harmonic reduction devices, AC network voltage adjustment, and AC network to reduce harmonics/ripples, etc., can solve problems such as the design of power quality characteristics of catenary power supplies, and improve power supply quality Effect

Inactive Publication Date: 2018-06-01
刘德宝
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some places use a large-capacity UPS as a purification power supply device, but as a general-purpose equipment, the UPS has not been designed for the power quality characteristics of the catenary power supply and the load characteristics of the railway premises

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
  • Novel railway overhead contact system power taking power source purification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Such as figure 1 As shown, the new railway catenary power supply purification device of the present invention includes an input filter, an output voltage controller, and an output filter. The input filter is a conventional LC filter, and its main function is to filter out the AC input The main characteristics of high-order harmonics of voltage are good high-frequency suppression effect and high system stability.

[0012] The main function of the output voltage controller is to keep the output voltage waveform as a stable and smooth sine wave under the condition of large-scale fluctuation of the input voltage and severe distortion of the input voltage waveform. In the present invention, the controller adopts a multi-closed-loop controller scheme of inductive current (that is, inverter output current) feedback control plus output voltage effective value feedback control and load current feedforward control, which can control the output voltage waveform, frequency , The a...

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 a novel railway overhead contact system power taking power source purification device. The novel railway overhead contact system power taking power source purification device is characterized in that a direct current link is adopted as an intermediate link to realize the decoupling of an input voltage from an output voltage; a multi-closed-loop feedback control scheme having an output voltage effective value feedback control function and a load current feedback control function is adopted, so that the overhead contact system power source purification device has an automatic current limiting protection function, and therefore, the capacity of a power source to drive an impact load can be improved; and the load current feed forward control is introduced, so that the overhead contact system power source purification device can perform real-time adjustment with change of the load. With the device adopted, the power supply quality of the overhead contact system powersource can be improved; high-quality and reliable working power sources can be provided for various kinds of power loads; the problem of the matching of the electric energy of the power source and the need of an electrical load when the electrical load obtains power from an overhead contact system can be solved; and various technical indicators of the novel railway overhead contact system power taking power source purification device not only meet national standards, but also comply with IEC standards in the aspect of electric energy quality, and has strength and a prospect at home and abroadwhen being popularized.

Description

technical field [0001] The invention belongs to the field of catenary power extraction, and in particular relates to a novel railway catenary power acquisition power purification device that adopts a multi-closed-loop feedback control scheme with output voltage effective value feedback control and load current feedforward control. Background technique [0002] In the development process of my country's electrified railway construction, the scheme of using catenary power supply for railway signal and other loads has gone through the following stages: The catenary power supply is directly used as a signal without processing after being stepped down by a 27.5 / 0.23 kV transformer Standby power supply; the catenary power supply is used as the power supply stage after simple voltage stabilization; the catenary power supply is used as the power supply stage after being purified by UPS or AC / DC devices. [0003] The reliability and safety requirements of my country's railway power 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
Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12H02J3/01
CPCH02J3/01H02J3/12Y02E40/40
Inventor 刘德宝
Owner 刘德宝
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More