Inverter welding machine for stably improving electric current density

Abstract

The invention discloses an inverter welding machine for stably improving electric current density. The inverter welding machine comprises an inversion module, a transformer module, a first rectifyingand filtering module, a welding component, a current feedback module and a master control module. The output end of the inversion module is electrically connected with the input end of the transformermodule. The output end of the transformer module is electrically connected with the input end of the first rectifying and filtering module, and the output end of the first rectifying and filtering module is electrically connected with the welding component. The current feedback module is used for detecting the output current of the inversion module, and the output end of the current feedback module is electrically connected with the feedback end of the master control module. The output end of the master control module is electrically connected with the control end of the inversion module. According to the design, the power supply frequency is improved, the current density is improved through closed-loop control, and welding quality is improved.

Description

technical field [0001] The invention relates to the field of arc welding equipment, in particular to inverter welding. Background technique [0002] In the traditional inverter welding machine, the controller controls the inverter part to output alternating current, which is transformed by the transformer part and then output to the rectifier filter part, and finally provides high current for the welding part to drive the welding part to work. However, in the past, the controller controlled the inverter The components can only output alternating current with a frequency of about 20KHZ. Increasing the frequency can increase the current density, thereby greatly improving the welding quality, but it is also difficult to increase the frequency. Increasing the frequency will cause fluctuations in the output of the inverter components. The main control module It is not easy to control, which leads to the opposite effect; furthermore, the iron core material of the transformer compo...

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Problems solved by technology

[0002] In the traditional inverter welding machine, the controller controls the inverter part to output alternating current, which is transformed by the transformer part and then output to the rectifier filter part, and finally provides high current for the welding part to drive the welding part to work. However, in the past, the controller controlled the inverter The components can only output alternating current with a frequency of about 20KHZ. Increasing the frequency can increase the current density, thereby greatly improving the welding quality, but it is also difficult to increase the frequency. Increasing the frequency will cause fluctuations in the output of the inverter components. The main control module It is not easy to control, which leads to the opposite effect; further, the iron core material of the previous transformer components uses amorphous material, and when the frequency increases, the amorphous material cannot match the high frequency, resulting in poor output effect

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