Slow start circuit of inverter welding machine with power correction circuit

A technology of slow start circuit and power correction, which is applied in the direction of arc welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of large volume and uneconomical, etc., and achieve the goals of reducing current impact, improving reliability, reducing power and volume Effect

Active Publication Date: 2016-01-20
SHANGHAI GREATWAY WELDING EQUIP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

bulky and uneconomical

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
  • Slow start circuit of inverter welding machine with power correction circuit
  • Slow start circuit of inverter welding machine with power correction circuit
  • Slow start circuit of inverter welding machine with power correction circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0014] Such as figure 1 As shown, the start-up slow-start circuit mainly includes: slow-start resistor R0, relay K1, resistor R154, diodes D5, D27, voltage regulator tube DZ25, capacitor C52, and triode Q13. The starting resistor R0, bridge stack BR1 and BR2 provide DC power to the switching power supply after rectification. The switching power supply works and outputs a DC signal of 15V. 15V charges the capacitor C52 through the resistor R154. When the voltage reaches the regulator value of the voltage regulator DZ25 When the voltage regulator works, the triode Q13 is turned on, the coil K1A of the relay is energized, the contact K1B is closed, D27 is used to protect the relay when the welding is turned off, and D5 is used to discharge the capacitor C52 when the welding is turned off, so as to ensure the The slow start circuit is working normally. In this circuit, relay K1 is on image 3 The pull-in is done after the middle PWM output, and the charging time of the RC compos...

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 provides a power-on soft start circuit with a power correction circuit inverter-type welding machine. A proper delay circuit is added among modules according to an operating sequence of the modules of the inverter-type welding machine; through the delay circuit, the function modules are started in order, power-on moment current impact of the welding machine is reduced, and the power and size of series resistors is reduced. The soft start circuit comprises a power-on soft start circuit, a power correction-soft start circuit, a power correction-frequency decrease circuit, and a master loop inversion-soft start circuit. The power and size of soft start resistors can be reduced, power-on current impact of the welding machine is reduced, reliability of the welding machine is improved, and tripping of an air switch when the welding machine is powered on in the domestic environment can be avoided.

Description

technical field [0001] The invention relates to a slow start circuit of a single-phase inverter welding machine, in particular to an inverter welding machine with a power correction circuit. Background technique [0002] At present, energy conservation and environmental protection are the development direction of power supplies in the future, and inverter welding machines, as a kind of power supply, are becoming more and more stringent in this regard. In order to achieve this goal, more and more inverter welding machines have added power correction circuits. The power correction circuit can solve the utilization rate of the welding machine to the power grid, and at the same time reduce the harmonics generated by the welding machine to achieve energy saving. Environmental friendly. The basic principle of the power correction circuit is a boost circuit, which raises the DC voltage after bridge rectification to a stable voltage value, and then filters it through an electrolyti...

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): B23K9/10
CPCB23K9/1043
Inventor 刘纪周崔正永李述辉王敏徐德进胡成绰
Owner SHANGHAI GREATWAY WELDING EQUIP
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