Power loss reduction in electronic inverters trough IGBT-MOSFET combination

Abstract

This paper introduces a configuration aimed at switching losses reduction through a power leg constructed by combining a MOSFET and an IGBT. The combined use of these different switches leads to the turn-on losses reduction through the use of the faster freewheeling diode of the IGBT, and the turn-off losses reduction through use of the MOSFET’s lower losses because of the lack of tailing current, typical for IGBT’s. The introduced leg structure can be used to build single phase – full bridge invertors or three phase inverters. The proposed leg is realized, experimented and validated.