Inverter welding machine overcomes the defects of low power density

poor control performance and low energy efficiency of traditional welding machine

which is an important milestone in the development of electric welding machine. In recent years

inverter welding machine has achieved great breakthrough in power platform

control system and process realization

and has become the mainstream product. This paper first briefly describes the basic situation of two critical technologies of inverter welding machine: the main circuit power conversion technology and power control technology; then discusses the development of inverter welding machine in the aspects of ultra-high inverter frequency

full digital control system and green welding process. Simple

sensitive

accurate

intelligent

green and efficient will become the future mainstream development direction of inverter welding machine.