Minimization of wiring inductance in high power IGBT inverter

摘要

The wiring inductance is one of main causes limiting the use ofnthe inverter in hard commutation mode, particularly when voltage,ncurrent and switching frequency are increased. The busbar technology isnthe means that allows one to reach low wiring inductance between DCnsource and power switches in spite of relatively long connections. Thisnpaper deals with studies of busbar structure applied to the high powerninverters in order to improve their performances. Two structures ofnwiring are tested; the traditional one and busbar technology.nExperimental and simulation results show that this last techniquenpermits to obtain very low wiring inductance so that no snubber circuitsnare needed