Silicon controlled rectifier polyphase bridge inverter commutated with gate-turn-off thyristor

摘要: A polyphase SCR inverter (10) having N switching poles, each comprised of two switches (1A, 1B; 2A, 2B . NA, NB) and diodes (D1B; D1B; D2A, D2B DNA, DNB) in series opposition with saturable reactors (L1A, L1B; L2A, L2B LNA, LNB) connecting the junctions between to an output terminal (1, 2 3) is commutated only one GTO thyristor (16) connected common negative a dc source tap inductor (14) positive source. clamp winding (22) diode (24) are provided, as snubber (18) which may have its capacitance (c) sized for maximum load current divided into plurality capacitors (C1, C2 CN), switch S1, S2 SN). The total be selected by activating function current. resistor 28 26 shunt reverse when acts generator, such motor while braking.