Verification of model of bi-directional switch in context of evaluation of its losses

Abstract

In the given paper the power losses of bi-directional semiconductor switches are evaluated in the context of elaboration of an integrated matrix converter AC drive where such switches are used. Safe operation of switches in a converter is extremely important factor for its successful operation of in whole. This, amongst other, assumes successful thermal design of the converter. The thermal design of matrix converters, especially integrated, is complicated due to the variety of their configurations, harder cooling conditions etc. For this reason the initial estimation of the losses through simulation seems helpful. This, however, requires an adequate model of the switches. In this paper calculated, simulated and experimentally measured losses of the switches are compared and conclusions regarding the utilized model are made.