role
The basic function of IGBT in inverter is as a high-speed contactless electronic switch.
operating 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 to convert direct current into alternating current, direct current into alternating current voltage will be reduced, such as the train power supply system 600V DC is 380V AC rectifier, The role of the IGBT inverter driver board is to re-restore this process. At the same time, the size of the current can be controlled by controlling the pulse width of the signal, and the AC frequency can be controlled, so as to control the speed of the motor.
IGBT module is a modular semiconductor product composed of IGBT(insulated gate bipolar transistor chip) and FWD(diode chip) through a specific circuit bridge package. The packaged IGBT module is directly applied to inverter, UPS uninterruptible power supply and other equipment.
IGBT module has the characteristics of energy saving, easy installation and maintenance, stable heat dissipation, etc. Currently on the market for the sale of such modular products, generally referred to as IGBT also refers to IGBT module; With the promotion of the concept of energy conservation and environmental protection, such products will be more and more common in the market.