IGBT is a combination of transistor and MOSFET, which has the characteristics of high-speed switching and strong voltage resistance, so it has been widely used in various AC modulation and high frequency switching circuits.
For the welding machine, the IGBT drive circuit is mainly to convert the low-voltage electrical pulse signal into the high-voltage high-current signal, so as to heat the welding material to the melting state and complete the welding task.
The principle of IGBT driver circuit is to control the opening and closing of IGBT through the output PWM signal, so as to control the output current and voltage.
The core part of IGBT drive circuit is the driver chip, which can provide high performance and high speed applications.
At the same time, the IGBT drive circuit can control the heat dissipation efficiency by controlling the speed of the water-cooled fan, thus protecting the equipment from overheating damage. In general, the IGBT drive circuit realizes an efficient, high-speed and highly reliable control mode, which is an important part of the efficient and stable operation of the welding machine.
Working principle: The use of IGBT switching principle, the use of control circuit to give the appropriate open, off signal,IGBT can according to your control signal will be converted into AC, DC converted into AC voltage will be reduced, such as the train power supply system 600V DC is 380V AC rectifier,IGBT inverter driver board role It's a reversion of the process.