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

AC-DC isolated conversion circuit

A technology for converting circuits and circuits, applied in the direction of converting AC power input into DC power output, irreversible AC power input into DC power output, electrical components, etc., can solve the problem of complex control of AC-DC conversion circuits, low power factor, High cost and other issues, to achieve the effect of reducing working capacity, low working current stress, and reducing voltage stress

Active Publication Date: 2014-01-29
SHENZHEN SINEXCEL ELECTRIC
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an AC-DC conversion circuit with a simple control method and high circuit efficiency in view of the defects of the above-mentioned AC-DC conversion circuit in the prior art, such as complicated control, high cost, low power factor and low efficiency. Isolation conversion circuit

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
  • AC-DC isolated conversion circuit
  • AC-DC isolated conversion circuit
  • AC-DC isolated conversion circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Such as image 3 Shown is the functional block diagram of the AC-DC isolation conversion circuit of the present invention, the AC-DC isolation conversion circuit is connected between the AC power supply and the load, and it includes a filter connected to the AC power supply and filtering the AC power provided by the AC power supply 10, further comprising a single-stage circuit 20 connected with the filter 10, rectifying each phase of the alternating current, power factor correction and isolation regulation, and a controller 30 for controlling and regulating the single-stage circuit 20. Wherein, the AC power supply is an N-phase AC power supply, and N is greater than or equal to 3 when a high input power factor is required.

[0033] The single-stage circuit 20 includes a high-frequency transformer and a switch tube, the switch tube is connected to the primary side of the high-frequency transformer; the controller 30 controls the switch tube to be turned on or off, and wh...

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 an AC-DC isolated conversion circuit, which is connected between an AC power supply and a load. The AC-DC isolated conversion circuit comprises a filter, a single-stage circuit and a controller, wherein the filter is connected with the AC power supply and filters AC provided by the AC power supply; the single-stage circuit is connected with the filter and performs rectification, power factor correction and isolated regulation on each phase of the AC; and the controller performs control regulation on the single-stage circuit. In the AC-DC isolated conversion circuit, the single-stage circuit simultaneously performs the rectification, the power factor correction and the isolated regulation on each phase of the AC by the control regulation of the controller, thereby forming a single-stage AC-DC conversion structure of the AC-DC isolated conversion circuit; a control way is simple; and an input end is not provided with an independent rectification circuit, a power factor correction (PFC) circuit and a high-voltage bulk capacitor are not required, and circuit efficiency is relatively higher.

Description

technical field [0001] The present invention relates to the technical field of switching power supplies, and more specifically relates to an AC-DC isolation conversion circuit. Background technique [0002] At present, the widely used AC-DC conversion circuits are basically composed of rectification circuits and DC-DC conversion circuits, such as figure 1 As shown, it is the functional block diagram of the existing AC-DC two-stage structure conversion circuit. The first-stage rectifier circuit realizes the functions of filtering and AC-DC rectification, and the second-stage DC-DC conversion circuit realizes the functions of voltage transformation, voltage stabilization and isolation. In the above-mentioned two-stage structure conversion circuit, usually in order to reduce the output ripple, a high-voltage, large-capacity electrolytic capacitor C1 is connected to the output terminal of the rectifier circuit, which not only increases the cost of the circuit, but also reduces t...

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 Patents(China)
IPC IPC(8): H02M7/04H02M7/217
CPCY02P80/10
Inventor 龙成强
Owner SHENZHEN SINEXCEL ELECTRIC
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