There are many years from the power inverter have already appeared to the development. Its applications now are much more than only met the emergency equipment. It is used in many areas such as energy saving, VVVF, the improvement of power supply quality and so on. With the development of power electronic devices, the trend of the power inverter is higher voltage, big power and lower loss.
This article analyzed each component in detail of the main circuit of power supply.
The article introduced the physical structure and electric properties of the power module. the design was born. Several waveforms such as soft start, gate drive signal and so on. In the document, there raised a method for choosing the equal resistance.
Key words:power inverter,IGBT module, ,equal resistance,switch loss