High-frequency inverter frequency inverter welding power rectifier rectifier welding power source is a high performance, high efficiency, the provincial timber supply of new welding machine, welding machine power source represents the current direction of development.
IGBT module as the commercialization of high-capacity, this power also has broad application prospects. Most of inverter welding power supply with AC - DC - AC - DC conversion method. 50Hz alternating current into direct current by full-bridge rectifier, IGBT PWM high-frequency components of the inverse transform part of the DC into a 20kHz high-frequency square wave, the high frequency coupling transformer, rectifier filtered into a stable DC power supply arc to use.
The welding power supply poor working conditions, frequent in the short-circuit, arcing, open alternately, hence high-frequency inverter welding power supply rectification work to be the most critical reliability issue, but also the problems users are most concerned about .
Microprocessor as pulse width modulation (PWM) controller associated, through the multi-parameter, multi-information extraction and analysis, to predict the system, the purpose of a variety of working conditions, and then make adjustments in advance of the system and process to address the current high-power IGBT inverter power supply reliability.
Inverter welding machine can be done abroad has been rated welding current 300A, 60% duty cycle, full load voltage 60 ~ 75V, current range 5 ~ 300A, weight 29kg.
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