Computation method and comparison of semiconductor power losses within bidirectional switches (BDS)

This paper presents a method for computing the total semiconductor power losses within different bidirectional switches aimed to build AC/AC converters (matrix converters). Bidirectional switches built with different power device technologies are characterized in static as well as in dynamic operation in order to extract their key parameters and thus, model their behavior in the conduction and switching mode. This characterization data allows computing accurately total bidirectional switches power dissipation (conduction and switching power losses) and comparing the power losses associated to different power device technologies. The proposed numerical modelling tool will allow the converter designer to choose the optimum power semiconductors in terms of efficiency and cost.