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A welding power supply device with an energy maintenance circuit and its control method

A welding power source and energy technology, used in welding equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of high power consumption of series resistance, and achieve the effects of improving reliability, reducing loss and improving dynamic performance.

Active Publication Date: 2015-09-02
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to: solve the problem of excessive power consumption of the series resistance during the switching process of the circuit time constant; further improve the dynamic response performance of the power supply

Method used

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  • A welding power supply device with an energy maintenance circuit and its control method
  • A welding power supply device with an energy maintenance circuit and its control method
  • A welding power supply device with an energy maintenance circuit and its control method

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Embodiment approach 1

[0055] Such as Figure 4 Shown is a system structure diagram of Embodiment 1 of the present invention, and the present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments below: in the present invention, the adjustable voltage output circuit (1), the power switch tube Q1 drive circuit (3 ), current switching power switch tube Q2 drive circuit (4), voltage output circuit power switch tube drive circuit (5), power supply current feedback filter circuit (6), power supply voltage feedback filter circuit (7), core control circuit (8) . The human-computer interaction circuit (9) belongs to the prior art. The adjustable voltage output circuit (1) is composed of a three-phase rectifier bridge BR, an input filter capacitor C, voltage output circuit power switch tubes Q3, Q4, Q5, Q6, an intermediate frequency transformer TRH, and rectifier diodes D2 and D3. The adjustable voltage output circuit (1) only needs to output a ...

Embodiment approach 2

[0081] A welding power supply device with energy retention function, the system structure of the second embodiment is as follows Figure 11 shown. The device includes a voltage output circuit (11), a power switch tube Q1 drive circuit (3), a current switching power switch tube Q2 drive circuit (4), a power supply current feedback filter circuit (6), a power supply voltage feedback filter circuit (7), The core control circuit (8), the human-computer interaction circuit (9), the inductance current feedback filter circuit (10), and the welding power supply main circuit (2) with the energy holding circuit The circuit (2) includes a chopper power switch tube (Q1), a freewheeling diode (D2), an energy retention diode (D1), an output filter inductor (L), a current switching power switch tube (Q2), and a power resistor R. The collector C of the chopping power switching tube Q1 is connected to the cathode K of the energy-holding diode D1, the emitter E of the chopping power switching ...

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Abstract

The invention discloses a welding source device with an energy keeping loop and a control method. The welding source device with the energy keeping loop comprises a voltage output circuit, a power switch tube Q1 driving circuit, a current switching power switch tube Q2 driving circuit, a supply current feedback filter circuit, a supply voltage feedback filter circuit and a core control circuit, and further comprises a welding source main circuit with the energy keeping loop. The voltage output circuit supplies voltage to the welding source main circuit, and a power switch tube Q1 and a power switch tube Q2 of the welding source main circuit are controlled by the power switch tube Q1 driving circuit and the current switching power switch tube Q2 driving circuit respectively. The supply current feedback filter circuit is used for feeding signal filter back to a current flowing by an electric arc load. The supply voltage feedback filter circuit is used for feeding signal filter back to electric arc load voltage. The core control circuit is used for controlling power-on and power-off of the energy keeping power switch tube Q1 and the current switching power switch tube Q2 in the welding source main circuit 2.

Description

technical field [0001] The invention belongs to the technical field of thermal processing, and in particular relates to a melting electrode gas shielded welding equipment. technical background [0002] The metal gas shielded welding process mainly adopts two droplet transfer processes, one is a short-circuit transfer process, and the other is a pulse transfer process. The two kinds of process methods generally use constant speed feeding of welding wire to work with DC flat external characteristic power supply mode. In the short-circuit transition welding process, the arc is in an intermittent combustion state, the heat input is relatively small, and the volume of the molten pool is also small, so it is especially important in all-position welding such as pipelines. However, conventional short-circuit transition welding has the disadvantages of poor weld formation and large welding spatter. [0003] In order to suppress the spatter generated by the short circuit, the wavefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/173B23K9/10
Inventor 黄鹏飞路永全卢振洋白韶军
Owner BEIJING UNIV OF TECH