Three-phase antiparallel thyristors

This section describes three-phase antiparallel thyristors

A block diagram and input parameters for a three-phase antiparallel thyristor are given in Table 1.

Table 1. A three-phase antiparallel thyristor component in the Schematic Editor core library
component component dialog window component parameters

Three phase antiparallel thyristors
  • Digital input pins for:
    • Phase A S1 (1..32)
    • Phase A S2 (1..32)
    • Phase B S1 (1..32)
    • Phase B S2 (1..32)
    • Phase C S1 (1..32)
    • Phase C S2 (1..32)
  • gate_logic (active high, active low)
Weight = 3

A schematic block diagram of the three-phase antiparallel thyristorsis given in Figure 1.

Digital inputs, when selected as control input option, enables the user to assign gate drive inputs to any of the digital input pins (from 1 to 32/64). For example, if Phase A S1 is assigned to 1, the digital input pin 1 will be routed to the Phase A S1 switch gate drive. In addition, the gate_logic parameter selects either active high (High-level input voltage VIH turns on the switch), or active low (Low-level input voltage VIL turns on the switch) gate drive logic, depending on the user’s external controller design.

Figure 1. Schematic block diagram of three phase antiparallel thyristors with corresponding thyristor naming
Model control, when selected for Control parameter, enables the user to set the thyristor gate drive signals directly from signal processing model. The input pin that appear on the top of the converter requires a vector input of six gate drive signals in the following order: [Phase A S1, Phase A S2, Phase B S1, Phase B S2, Phase C S1, Phase C S2]. When controlled from the model, logic is always active high.

Digital Alias

If a converter is controlled by digital inputs, an alias for every digital input used by the converter will be created. Digital input aliases will be available under the Digital inputs list alongside existing Digital input signals. The alias will be shown as Converter_name.Switch_name, where Converter_name is name of the converter component and Switch_name is name of the controllable switch in the converter.