Experimental Analysis of Communitation Process of Power Semiconductor Transistor's Structures

The paper deals with testing device designed for experimental examination of processes in power electronics devices during various switching modes is described. Through the use of auxiliary circuits additional switching modes (ZVS, ZCS) are realized except hard switching, and turning-off with reduced current respectively. The device´s advantage is possibility of fine dead time setting, allowing us analyzing the effects of phenomenon noted above, on measurements of commutation losses.