Minimisation of wiring inductance in high power IGBT inverter

Abstract

Summary form only given as follows. The wiring inductance is one of the main causes limiting the use of the inverter, in hard commutation mode, particularly when voltage, current and switching frequency are increased. The busbar technology is the means that allows low wiring inductance between DC source and power switches to be reached in spite of relatively long connections. This paper deals with studies of busbar structure applied to the high power inverters in order to improve their performances. Two structures of wiring are tested; the traditional and and busbar technology. The experimental and simulation results show that this last technique permits very low wiring inductance to be obtained so that no snubber circuits are needed.