In a drive system of power transistor inverter-motor, not only can it be used in fine control of motor current waveform, phase, amplitude and frequency, but can also be used to sense, fault current.

This paper has designed a inverter power supply of volume 2KVA, working frequency 20KHZ. , based on that has analyzed the characteristic of IGBT (Insulated Gate Bipolar Transistor).

Using the reference material being present at home, We have made out the formula and the procedure for designing transistor inverter and made designs and experiment.