Experimental research of multiple switching in a thyristor controlled phase shifter

Abstract

Special features of processes of switching of thyristor AC bridges, as a part of a high-power thyristor controlled phase shifter (TCPS), are considered. Infuence of mutual magnetic coupling of secondary windings of an excitation transformer on an interval of safety switching of a thyristor switch of TCPS is experimentally discovered and theoretically justifed. Results of experiments, confrming presence of an effect of serial switching of secondary windings of an excitation transformer in an interval of slow (long period) switching and an effect of acceleration of a process of switching in an interval of fast (shot period) switching, are presented.