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

High-voltage and intermediate-frequency AC/DC conversion system

A conversion system, intermediate frequency technology, applied in the direction of converting AC power input to DC power output, output power conversion devices, electrical components, etc., can solve the problems of eddy current loss, output voltage instability, output steady-state voltage difference, etc. The effect of reducing eddy current loss, good stability and avoiding burnout

Inactive Publication Date: 2014-03-19
JIANGXI HONGDU AVIATION IND GRP
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, to meet the actual needs, and to provide a high-voltage intermediate frequency AC / DC conversion system, which aims to solve the problem of eddy current loss and output steady-state voltage in the current high-voltage intermediate frequency AC / DC conversion system. Differences, unstable output voltage, lack of protection circuits, technical problems related to large volume of system modules

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
  • High-voltage and intermediate-frequency AC/DC conversion system
  • High-voltage and intermediate-frequency AC/DC conversion system
  • High-voltage and intermediate-frequency AC/DC conversion system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Implementation column: a high-voltage intermediate frequency AC / DC conversion system, see figure 1 , figure 2 , image 3 , Figure 4 The system includes an input rectification and filtering circuit, a power conversion circuit, an output rectification and filtering circuit, a drive circuit, and a control circuit, and the power conversion circuit includes a power transformer T1 and a phase-shifted full bridge circuit connected to the input end of the power transformer T1 The input end of the output rectification filter circuit 3 is connected to the power transformer T1, and its output end is connected to the control circuit 4, and the output end of the input rectification filter circuit 3 and the output end of the drive circuit are all passed through the shift The phase full bridge circuit is correspondingly connected to the power transformer T1.

[0032] The phase-shifted full bridge circuit comprises a super forearm circuit 1, a lagging arm circuit 2 correspondingl...

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 relates to a high-voltage and intermediate-frequency AC / DC conversion system. The objective of the invention is to solve the technical problems of eddy current loss, differences in steady voltage output and instable output voltage in rectification of an existing high-voltage intermediate-frequency AC / DC conversion system. The high-voltage and intermediate-frequency AC / DC conversion system of the invention comprises an input rectification and filtering circuit, a power conversion circuit, an output rectification and filtering circuit, a driving circuit and a control circuit, wherein the power conversion circuit includes a power transformer and a phase-shifted full-bridge circuit which is connected with the input end of the power transformer; the input end of the output rectification and filtering circuit is connected with the power transformer; the output end of the output rectification and filtering circuit is connected with the control circuit; and the output end of the input rectification and filtering circuit and the output end of the driving circuit are correspondingly connected with the power transformer through the phase-shifted full-bridge circuit. With the high-voltage and intermediate-frequency AC / DC conversion system adopted, current leakage will not exist in the whole operation process of the circuits. Compared with the existing high-voltage and intermediate-frequency AC / DC conversion system, the high-voltage and intermediate-frequency AC / DC conversion system of the invention can better reduce the eddy current loss and enables more stable output voltage.

Description

technical field [0001] The invention relates to an AC / DC conversion system, in particular to a high-voltage intermediate-frequency AC / DC conversion system used on an aircraft. Background technique [0002] At present, the 28V low-voltage DC power supply system is mostly used in the aircraft power supply system. The main power supply for this DC voltage is mostly a permanent magnet AC generator, and the voltage on the voltage line output by the generator is mostly a three-phase AC power of several hundred volts. , the frequency of the current is several kilohertz, and the above voltage and current cannot directly supply power to the equipment on the aircraft. In order to solve the above problems, relevant technical personnel have designed an AC / DC conversion system dedicated to the above aircraft. In some systems, a high-voltage intermediate frequency AC / DC conversion module is used to convert AC power into 28.5V DC power, which together with the generator constitutes the mai...

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): H02M7/217
Inventor 李科连王剑琴袁飞马周志强许立燕章磊谢锦涛阳刚
Owner JIANGXI HONGDU AVIATION IND GRP
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