Potential of Reverse Conducting IGBTs in Voltage Source Inverters

摘要

Reverse Conducting IGBTs integrate the functionality of the IGBT and the free-wheeling diode into one chip. This reduces the current density in the IGBT mode and especially in the diode mode. Therefore, the output current of the inverter can be increased. In this paper it is analysed, how the performance improvement depends on the application conditions. Three phase inverters with AC output current in motor and generator mode at high and low output fundamental frequencies are taken into account as well as inverters with DC output current.