IN RAILWAY ALTERNATING CURRENT ELECTRIC TRANSPORT ELECTRIC-SUPPLY UNITED CONVERTER SYSTEM, CONSIDERING IGBT-TRANSISTOR MODULES CONTROLLED THREE-PHASE RECIPROCAL RECTIFIER UNIT PROCESSING OF IMPULSE CONTROL ALGORITHMS

Abstract

In a scientific paper is presented IGBT-transistor modules controlled three- phase reciprocal rectifier unit in Transport electric-supply united converter system, work algorithms of main three- phase rectifier and three-phase voltage inventory units and commutation functions of the corresponding currents. Waveform diagrams of all electrical quantities (phase voltages) are shown; Algorithms of impulse control of transistor modules. Analytical images of commutation functions for cases of conventional transistors are established (considering the commutation angle) and for cases of IGBT-transistor modules ( =0). As a result of all this, it becomes easier to carry out current processes in the united converter system.