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Inverter welding machine

An inverter welding machine and electrical connection technology, applied in the field of IGBT inverter digital carbon dioxide protection welding machine, can solve the problems of low intelligence, power grid harmonic pollution, complicated circuits, etc., to save costs, reduce pollution, reduce The effect of current spikes

Inactive Publication Date: 2012-12-05
QUANZHOU WEIFENG WELDING EQUIP
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  • Abstract
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Problems solved by technology

[0004] The invention proposes an inverter welding machine, which solves the problems of complex inverter welding machine circuits, harmonic pollution to the power grid and low intelligence in the prior art. The frequency non-polar capacitor, that is, the CBB capacitor element, when using the inverter welding machine of the present invention to carry out manual arc welding to no-load, only the IGBT inverter digital CO2 gas shielded welding and manual arc welding dual-purpose welding machine with weak electric signals

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] refer to figure 1 and figure 2 , an inverter welding machine (not shown), which includes a switch 1, a drive circuit 2, a main circuit (not shown), a control circuit (not shown), a pulse width modulation PWM output circuit (not shown) and detection circuit (not shown); the switch 1 is electrically connected to the drive circuit 2, the main circuit, the control circuit, the PWM output circuit and the detection circuit; A rectifier circuit 3, a filter ...

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Abstract

The invention provides an inverter welding machine which comprises a switch, a driving circuit, a main circuit, a control circuit, a pulse width modulation (PWM) output circuit and a detection circuit, wherein the switch is respectively and electrically connected with the driving circuit, the main circuit, the control circuit, the PWM output circuit and the detection circuit; and the main circuit consists of a first rectifier circuit, a filter circuit, an inverter circuit, a transformer circuit, a second rectifier circuit and an output circuit. According to the inverter welding machine disclosed by the invention, a current peak is reduced, and thus the impact on a powder grid is reduced; input current harmonics are reduced, and thus the pollution to the power grid is greatly reduced; and in addition, compared with a electrolytic capacitor, a non-polarized capacitor has the characteristic that the service life is greatly prolonged, so that the cost is saved.

Description

technical field [0001] The invention relates to an inverter welding machine, in particular to an IGBT inverter digital carbon dioxide protection welding machine. Background technique [0002] At present, IGBT inverter welding machines are widely used in medium and high-power inverter welding machines. IGBT inverter welding machines have become the mainstream of inverter welding machines, covering electrode arc welding, argon arc welding, and CO2 gas shielded welding. For all arc welding power supply fields such as molten electrode argon arc welding, the IGBT inverter welding machine has the advantages of small size, light weight, power saving and energy saving, and can realize fine control of welding. The disadvantage is that the circuit is complicated. Harmonic pollution to the power grid: The input side of the inverter welding machine adopts diode rectification and electrolytic capacitor filtering, which has a large impact current on the power grid. Not intelligent enough...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00B23K9/10
CPCY02P70/10
Inventor 高铭智
Owner QUANZHOU WEIFENG WELDING EQUIP
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