4. Polyphase thyristor current switches

Figure 1 - Single-phase thyristor current switch with symmetrical modulation

Figure 2 - Single-phase thyristor current switch: switch conduction cyclogram, modulation function and waveforms

Figure 3 - Single-phase thyristor current switch: variation of reactive power as a function of active power at constant current Ic and reduced values

Figure 4 - Single-phase bridge rectifier with diodes

Figure 5 - Symmetrical mixed single-phase bridge rectifier

Figure 6 - Mixed single-phase bridge rectifier: variation of reactive power as a function of active power at constant current Ic and reduced values

Figure 8 - Single-phase current switch with freewheeling diode

Figure 10 - Three-phase thyristor current switch: switch conduction cyclogram, modulation function and waveforms for rectifier operation

Figure 11 - Three-phase thyristor current switch: switch conduction cyclogram, modulation function and waveforms for zero power exchange, i.e. for

Figure 12 - Three-phase thyristor current switch: switch conduction cyclogram, modulation function and waveforms for inverter operation

Figure 14 - Three-phase thyristor current switch with delta grouping of voltage sources: current values in the delta branches

Figure 15 - Three-phase diode bridge rectifier: switch conduction cyclogram, modulation function and waveforms

Figure 16 - Mixed three-phase bridge rectifier

Figure 17 - Mixed three-phase bridge rectifier: variation of reactive power as a function of active power at constant current Ic and reduced values

Figure 18 - Mixed three-phase bridge rectifier with freewheeling diode

Figure 19 - Series connection of two elementary converters: schematic diagram

Figure 20 - Series connection of two single-phase bridges

Figure 21 - Rectifier-inverter with pulsation index p &#61; 12

Figure 22 - Staggered-bridge rectifier-inverter: variation of reactive power as a function of active power at constant current Ic and reduced values

Figure 23 - Dodecaphase current switch for powering a high-power synchronous machine

Figure 25 - Parallel connection of two elementary three-phase bridges

Figure 26 - Polyphase thyristor current switch: elementary structure

Figure 27 - Polyphase thyristor current switch: alternating current waveform

Figure 28 - Reversible circuit with inversion logic in the case of a three-phase bridge structure

Figure 29 - Reversible circulating current circuits for three-phase bridge structures