SCR d.c. interrupter

摘要

A semi-conductor controlled rectifier (SCR) d.c. interrupter in which any (optional) number m of identical, self-contained and parallel connected phases each form an identical series connection of a semi-conductor controlled retifier (Th1) . . . (THm) and a diodes (D1 . . . (Dm). An m number of identical, self-contained resonant arms are arranged in star or Y-connection, with any of the arms having an identical series connection of a capacitor (C1) . . . (Cm) and a reactor (L1) . . . (Lm) respectively. The star vertices are connected between the cathodes of the semi-conductor controlled rectifiers (Th1) . . . (Thm) and the anodes of the diodes (D1) . . . (Dm). The star neutral is associated with the d.c. power source (BA) positive or negative pole.