Double-wire pulse MIG welding power supply system based on LLC and control method

A power system, pulse technology, used in manufacturing tools, welding equipment, arc welding equipment, etc.

Pending Publication Date: 2019-11-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to overcome the shortcomings of the existing welding power supply system, the present invention provides an LLC-based dual-wire pulsed MIG welding power supply system and its control method

Method used

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  • Double-wire pulse MIG welding power supply system based on LLC and control method
  • Double-wire pulse MIG welding power supply system based on LLC and control method
  • Double-wire pulse MIG welding power supply system based on LLC and control method

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Embodiment Construction

[0074] The present invention will be described in further detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0075] Such as figure 1 As shown, an LLC-based dual-wire pulsed MIG welding power system includes a three-phase AC input power grid, a host power module, a slave power module, a man-machine interface module and an arc load; the arc load includes a host arc load and a slave Electromechanical arc load; the host power module, slave power module and man-machine interface module are connected to each other through the CAN bus. One end of the host power module is connected to the three-phase AC input grid, and the other end is connected to the host arc load; one end of the slave power module is connected to the three-phase AC input grid, and the other end is connected to the slave arc load;

[0076] The host power module and the slave power module have the same structure, and...

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Abstract

The invention discloses a double-wire pulse MIG welding power supply system based on LLC and a control method. The system comprises a three-phase alternating current input power grid, a host power supply module, a slave power supply module, a human-computer interface module and an arc load; the arc load comprises a host arc load and a slave arc load; the main power supply module is connected to the three-phase alternating current input power grid and the host arc load; the slave power supply module is connected to the three-phase alternating current input power grid and the slave arc load; andthe human-computer interface module is connected to the host power supply module and the slave power supply module, and the host power supply module and the slave power supply module are same in structure and are formed by N subsystems in parallel. The control method is the double-wire pulse phase control comprising synchronous phase, alternating phase and independent phase. According to the system, the advantages of being high in cladding efficiency of double-wire pulse MIG welding and high in electric energy conversion efficiency of a LLC resonant converter are combined, so that any switching of the output of three-phase pulse waveform is realized.

Description

technical field [0001] The present invention relates to the field of welding technology, in particular to the field of dual-wire pulse high-efficiency welding technology, in particular to an LLC-based dual-wire pulse MIG welding power supply system and a control method. Background technique [0002] Since the reform and opening up, my country's industry has entered a period of rapid development. In the automobile, railway, shipbuilding and petrochemical industries, welding technology has played an irreplaceable role. Traditional single-wire welding technology has low efficiency and serious energy loss, and welds are prone to welding defects such as undercuts and humps. In order to keep up with the development of the times, a welding technology with higher efficiency and better welding quality came into being. Twin-wire pulsed MIG welding is one of the innovative methods of high-efficiency welding technology. It is developed on the basis of single-wire welding. It consists o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K9/10B23K9/095
CPCB23K9/173B23K9/1043B23K9/0953
Inventor 吴开源詹家通谢沛民曹宣伟尹彤
Owner SOUTH CHINA UNIV OF TECH
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