The Dynamic Operation Investigation of an Active Rectifier Control System with IGCT-Thyristor Switching Angle Table Selection Function

Abstract

The paper investigates the dynamic operation modes of frequency converter active rectifiers with the previously proposed improved control system. This control system allows the use of IGCT thyristors switching angle tables with different switching frequencies depending on the operating mode of the frequency converter. The tables were changed when the equal control signals to the power switches of the active rectifier were generated using the current and the new tables. The research has been performed on the previously developed simulation model in the Matlab-Simulink software package. The analysis of the research results has shown the minimum disturbing effects on the regulated parameters of the active rectifier when changing the tables.