Multifunctional high-frequency inversion direct-current electric welding machine realizing circuit

Abstract

The invention relates to an electric welding machine circuit, in particular to a multifunctional high-frequency inversion direct-current electric welding machine realizing circuit which comprises an electric welding machine control unit, a voltage regulator, a current regulator, a PWM (pulse-width modulation) control circuit, an IGBT (insulated gate bipolar transistor) driving circuit, a high-frequency inversion direct-current power source main circuit, an electric welding machine output electrode, a current detection circuit and an isolation voltage detection circuit. The electric welding machine control unit is a control center taking a CPU (central processing unit) logic control unit as a core, and the CPU logic control unit is connected with a display unit, a constant-current or constant-voltage control unit, a D / A converter and an A / D converter respectively. High-frequency technology, soft switching technology and digital control technology are adopted to realize constant-voltage characteristic and constant-current characteristic of an electric welding machine. The electric welding machine has three functions including TIG (argon tungsten-arc welding), MMA (manual metal arc) and MIG (metal-inert gas) welding, production cost is lowered, requirements on multifunctional intelligentization and high-quality welding are met, and the electric welding machine has a friendly display interface and is convenient to operate and use.

Description

technical field [0001] The invention relates to a welding machine circuit, in particular to a multifunctional high-frequency inverter DC welding machine realization circuit, which can realize three functions of TIG tungsten argon arc welding, MMA manual welding and MIG metal pole gas shielded welding. Background technique [0002] Since the reform and opening up, the national economy has grown rapidly, "scientific and technological innovation, independent innovation" has become the mainstream of domestic industrial development, and my country's industry is gradually developing in the direction of intensive, energy-saving, emission-reducing, and low-carbon. Electric welding machine is a low-voltage electrical equipment commonly used in construction, manufacturing, and machining industries. It is widely used as an indispensable welding equipment in industrial production. With the development of industry and the process of internationalization of the market, electric welding ma...

AI Technical Summary

Problems solved by technology

The technicians of scientific research institutes and enterprises are constantly exploring and researching, hoping to develop an electric welding machine with superior performance to meet the functional requirements of TIG welding, MMA welding and MIG welding at the same time. Although some progress has been made, in practice There are still technical problems that have not been overcome in the application

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