Description
The thyristor with diode model is similar to the thyristor model with an anti-parallel diode. The anti-parallel diode allows the current to flow when the thyristors are turned off, thus providing a path.
The model considers various factors like forward voltage drop and reverse break over voltage, blocking current, snubber elements, holding current, on/off resistance. Depending on the user's requirement, there is also an option to select the precision functionality, which allows the user to compensate for errors due to digital implementation of the model during the state switching as a function of time step. The turnoff time Tq is the recovery time between the instant the anode current has decreased to 0 and the when the thyristor is capable of withstanding positive voltage without turning on again.
The model also has an option to be controlled from external signals and an option to enter the precision delay D.
Mask and Parameters
General
| Name | Description | Unit | Variable = {Possible Values} |
|---|---|---|---|
| Vmin | Forward voltage drop | V | {[0,1e12]} |
| Ropen | Open state resistance | Ohm | {[0,1e12]} |
| Rclose | Closed state resistance | Ohm | {(0,1e12]} |
| Rsnubber | Snubber resistance | Ohm | {(0,1e12]} |
| Csnubber | Snubber capacitance | F | {[0,1e12]} |
| Control type | External Input pins: Schematic control signal; the received integer is converted to a binary string where each digit corresponds to a phase External Input sensors: Target digital inputs |
Advanced
| Name | Description | Unit | Variable = {Possible Values} | |
|---|---|---|---|---|
| Fail reset | Fail reset | {Enable, Disable} | ||
| Precision valve | Enable: Enables recalculation of the state switch command using exact time between steps (as percentage of time step) Disable: does not use precision valve | {Enable, Disable} | ||
| Imin | Holding current | A | {[0,1e12]} | |
| Tq | Thyristor turn off time | s | {[0,1e12]} | |
| Fbov | Forward break over voltage | V | {[0,1e12]} | |
| Rbov | Reverse break over voltage | V | {[0,1e12]} | |
Ports, Inputs, Outputs and Signals Available for Monitoring
Ports
| Name | Description |
|---|---|
| Net_1 | Network connection |
| Net_2 | Network connection |
Inputs
| Name | Description |
|---|---|
| D | Delay used for precision valves |
| P | Binary coded firing pulses |
Outputs
None
Sensors
| Name | Description | Unit |
|---|---|---|
| FailSig | Fail reset signal | |
| I | Diode current | A |
| Isw | Switch current | A |
| Delay | Delay due to forward voltage drop | s |
| DelayExt12 | Delay for external trigger | s |
| Cmd12 | Signal state command | |
| CmdExt12 | Signal state external command | |
| State12 | Diode state |