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All-digital variable polarity multifunctional square-wave pulse welding source

A welding power source, square wave pulse technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., to achieve the effect of improving efficiency and inverter frequency, improving control accuracy and good consistency

Active Publication Date: 2014-03-26
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing welding machine cannot meet these demands, so a multi-functional welding power source has been developed to make the welding machine more in line with the current technical needs

Method used

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  • All-digital variable polarity multifunctional square-wave pulse welding source
  • All-digital variable polarity multifunctional square-wave pulse welding source
  • All-digital variable polarity multifunctional square-wave pulse welding source

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Embodiment

[0026] An all-digital variable polarity multifunctional square wave pulse welding power supply, its system structure diagram is as follows figure 1 shown. The welding power source includes a main circuit 100 and a control circuit 200 . The main circuit 100 includes a rectification and filtering module 101, a front-stage inverter module 102, an intermediate frequency transformer module 103, a fast rectification and filtering module 104, and a rear-stage inverter module 105 connected in sequence; the rectification and filtering module 101 is connected to a three-phase AC input power supply, The rear inverter module 105 is connected to the arc load 106; the front inverter module 102, the intermediate frequency transformer module 103, the fast rectification filter module 104 and the rear inverter module 105 are all connected to the control circuit 200 so as to be controlled by the control circuit 200 Output of welding power source. The welding power supply of the present inventi...

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Abstract

The invention provides an all-digital variable polarity multifunctional square-wave pulse welding source, and relates to the technical field of welding equipment. The all-digital variable polarity multifunctional square-wave pulse welding source is characterized in that a main circuit and a control circuit are included; the main circuit comprises a rectification filtration module, a front stage inversion module, a medium frequency voltage transformation module, a rapid rectification filtration module and a rear stage inversion module which are sequentially connected; the rectification filtration module is connected with a three-phase AC input power source, and the rear stage inversion module is connected with an electric arc load; the front stage inversion module, the medium frequency voltage transformation module, the rapid rectification filtration module and the rear stage inversion module are all connected with the control circuit, so that power output is controlled by the control circuit. The five sorts of current waveforms, namely direct currents, direct current pulses, square waves, square wave pulses and pulse square waves can be output through the welding source, meanwhile, the main circuit of the welding source is of a double-inversion structure, and thus the good electric energy conversion efficiency and dynamic response performance can be achieved.

Description

technical field [0001] The patent of the present invention relates to the technical field of welding equipment, and specifically refers to an all-digital polarity-changing multifunctional square-wave pulse welding power supply. Background technique [0002] Compared with traditional welding machines, inverter welding machines have many advantages such as high efficiency and energy saving, light weight, small size, and good dynamic performance. They are very conducive to the realization of precise control and have become the mainstream development direction of welding equipment technology. However, the model of the inverter welding machine is complex, and it is difficult to obtain a good control effect by using analog control or classical control. At the same time, in many applications, in order to minimize the cost of production and operation, it is often necessary for the welding machine to have the function of "one machine with multiple functions". For example, when weldi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/09B23K9/10
CPCB23K9/092B23K9/1056
Inventor 王振民唐少杰冯允樑郭文龙
Owner SOUTH CHINA UNIV OF TECH
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