Soft starting plate for IGBT inverter manual metal-arc welding

An arc welding machine and inverter technology, applied in the field of IGBT inverter hand arc welding machine soft start board, can solve the problem of low safety of the main circuit, achieve the effect of simple optimization of circuit design and improve the overall service life

Inactive Publication Date: 2009-02-18
无锡市南方电器制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the back electromotive force of the inductance generates a new voltage impact at both ends of the IGBT during shutdown, so a freewheeling diode must be added, and the safety of the main circuit is not high

Method used

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  • Soft starting plate for IGBT inverter manual metal-arc welding
  • Soft starting plate for IGBT inverter manual metal-arc welding
  • Soft starting plate for IGBT inverter manual metal-arc welding

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Embodiment Construction

[0013] Further illustrate the concrete work process of the present invention below in conjunction with accompanying drawing:

[0014] Such as figure 2 As shown, the contact J-1 of the relay J1 is connected in parallel at both ends of the resistor R, one end of the relay J1 is connected to the collector of the transistor T1, the emitter of the transistor T1 is connected to the negative pole of the power supply, the capacitor C1, the diode D2 and the resistor R1 After being connected in parallel with each other, it is connected between the emitter and the base of the transistor T1; the other end of the relay J1 is connected to the positive pole of the power supply, and a resistor R2 is connected between this end of the relay J1 and the base of the transistor T1; Diode D1 is connected between both ends.

[0015] Its working process is: when the welding machine power is turned on, the main circuit and the control circuit are energized at the same time, and the A and B ends of th...

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Abstract

The invention relates to an IGBT inverter arc welding machine, in particular to a soft starting board for an IGBT inverter manual arc welding machine, wherein the soft starting board is one of function boards of the inverter arc welding machine. The technical proposal of the invention comprises that both ends of a resistor R are parallelly connected with contacts J-1 of a relay J1, one end of the relay J1 is connected wit a collector of a dynatron T1, an emitter of the dynatron T1 is connected with a negative electrode of a power supply, and a capacitor C1, a diode D2 and a resistor R1 are connected with each other in parallel and then are connected between the emitter and a base of the dynatron T1; the other end of the relay J1 is connected with a positive electrode of the power supply, and a resistor R2 is connected between the end of the relay J1 and the base of the dynatron T1; and a diode D1 is connected between both ends of the relay J1. The soft starting board can ensure that the whole circuit is safer and more reliable, and prolong the service life of the welding machine.

Description

technical field [0001] The invention relates to an IGBT inverter arc welding machine, in particular to a soft start board of an IGBT inverter manual arc welding machine, and the soft start board is one of the function boards of this type of inverter arc welding machine. Background technique [0002] Arc welding technology refers to the technology of welding metal materials by using the characteristics of low voltage and high current provided by the arc welding power supply. The metal produces a molten metal pool, so that the molten pool of the base metal and the part dissolves together to achieve the effect of welding. [0003] The new welding inverter power supply developed with modern power electronics technology has become the most promising arc processing welding equipment due to its high efficiency, energy saving and excellent control performance. [0004] Inverter arc welding equipment is composed of main power circuit, control circuit, air cooling system, water cooli...

Claims

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Application Information

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IPC IPC(8): B23K9/10
Inventor 李明杰
Owner 无锡市南方电器制造有限公司
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