Direct stored energy control system of plasma-cutting power source and control method thereof

A technology of energy storage control and plasma, applied in plasma welding equipment, electrical components, manufacturing tools, etc., can solve the problems of large cutting current ripple, low frequency oscillation cost, poor cutting quality, etc., to reduce the harm of harmonic current, Low cutting current, increasing real-time effect

Active Publication Date: 2014-04-16
江苏博大数控成套设备有限公司
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the quality of DC power supply includes voltage stability, peak-to-peak value of ripple and ripple frequency. If these indicators are poor, the ripple of the cutting current will be large, and the cutting quality must be poor.
To this end, these indicators need to be improved. At present, the common method is to increase the capacitance of the electrolytic capacitor, but blindly increasing the capacitance of the electrolytic capacitor will also bring about low-frequency oscillation, cost, and excessive volume. Therefore, high-power design and output current refinement are important The problems that must be faced and solved by interlaced parallel plasma cutting power supply;

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
  • Direct stored energy control system of plasma-cutting power source and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] see figure 1 , the present invention relates to a direct energy storage control system for plasma cutting power supply, said system includes a power circuit 2 and a control circuit 1;

[0027] The power circuit includes a reducing circuit 21, a chopper circuit 22 and a cutting torch circuit 23. The step-down circuit is a power frequency transformer, and the power frequency transformer includes a star-connected (Y-connected) primary coil, a star The secondary coil of the star connection (Y connection) and the secondary coil of the delta connection (△ connection), and the primary coil of the star connection input 380V three-phase AC power supply, the secondary coil of the star connection and the secondary coil of the delta connection The initial phases of the primary coils are 0° and 30° respectively, and the output voltage is 220V;

[0028] The chopper circuit includes a first interleaved BUCK circuit and a second interleaved BUCK circuit;

[0029]The first interleaved...

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 direct stored energy control system of a plasma-cutting power source and a control method of the direct stored energy control system. The system comprises a power circuit and a control circuit, wherein the power circuit comprises a voltage reduction circuit and a chopper circuit. The voltage reduction circuit is an industrial frequency transformer which comprises a primary coil and two secondary coils, the chopper circuit comprises two BUCK circuits in parallel, and the two BUCK circuits are connected with the two secondary coils respectively. According to the direct stored energy control system of the plasma-cutting power source and the control method of the direct stored energy control system, the output direct current can be supported to reach 260A, the circuits are simple, controlling is convenient, and meanwhile the direct stored energy control system and the control method have the advantages of being high in input power factor (larger than 0.96), low in ripple of the output direct current and the like.

Description

technical field [0001] The invention relates to a control system and a control method thereof, in particular to a system for direct energy storage control of a plasma cutting power supply device, which belongs to the fields of plasma cutting and power electronic conversion. Background technique [0002] The machine plasma cutting device is composed of mechanical equipment, electric control equipment, gas supply equipment, etc. The electric control equipment includes power supply system, numerical control system, cutting torch system and ECAN bus, and the power supply system includes plasma cutting power supply, arc ignition box, Air control box, cooling system, pipeline and other main parts; [0003] Plasma cutting power supply is one of the core components of machine plasma cutting devices. According to the development history, it can include various silicon rectifier power supplies, thyristor rectifier power supplies, inverter power supplies, and chopper power supplies. A...

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): B23K10/00H02M5/458
CPCB23K10/006
Inventor 田威
Owner 江苏博大数控成套设备有限公司
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