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Soft-switching inversion welder

An inverter welding machine and soft switch technology, applied in arc welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of complex control, only one type, and high cost of soft switch control circuits, and achieve simple control and cost. Low, high reliability effect

Active Publication Date: 2010-01-20
PANASONIC WELDING SYST TANGSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to propose a soft-switching inverter welding machine to solve the problems of high cost, complicated control and only corresponding to one input voltage level of the existing soft-switching control circuit.

Method used

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0044] The circuit of the soft-switching inverter welding machine of the present invention at least includes: a primary rectification unit, a first inverter unit, a second inverter unit, a secondary rectification and output detection unit, and a control unit;

[0045] The output setting and the output feedback of the secondary rectification and output detection unit are jointly input to the control unit, and the control unit generates a drive signal isolated from the control circuit and inputs it to the first inverter unit and the second inverter unit The control terminal of the electronic switching device in the

[0046] The first inverter unit and the second inverter unit are the same, and at a higher input voltage leve...

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Abstract

The invention discloses a soft-switching inversion welder which comprises a primary rectification unit, a first inversion unit, a second inversion unit, a secondary rectification and output detection unit and a control unit, wherein the first inversion unit is the same with the second inversion unit, the first inversion is connected in series with the second inversion unit when in higher-degree input voltage degree, the left two ends are connected to the output end of the primary rectification unit; when in lower-degree input voltage degree, the first inversion unit is connected in parallel with the second inversion unit, and the first inversion unit and the second inversion unit are connected to the output end of the primary rectification unit directly; work schedules of the first inversion unit and the second inversion unit are same, and electronic switching elements of the two inversion units realize the soft switching in a limited bipolar way. The invention can conveniently adapt to various input voltage degrees and ensure that the electronic switching elements work in a soft switching way.

Description

technical field [0001] The invention relates to the technical field of inverter welding machines, in particular to a soft-switching inverter welding machine with a full-bridge inverter structure. Background technique [0002] In the design and production process of inverter welding machines, the devices used in welding machines with different input voltage levels need to be changed greatly, and complicated tests are required, so when the input voltage levels are different, it will bring a lot of workload. In addition, the work of the inverter welding machine is realized by repeatedly turning on and off the electronic switching device, and the switching process of the electronic switching device generates power loss, and the higher the inverter frequency, the greater the proportion of this loss. The switching loss of the electronic switching device leads to a reduction in the utilization rate and lifetime of the electronic switching device. [0003] In order to eliminate the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/10
Inventor 陈建辉郭怀书陈琪
Owner PANASONIC WELDING SYST TANGSHAN