Description
Essentially, both of these models are identical, the TCR branch being a specific case of the TSC branch. Resistances R and r respectively represent ohmic losses in the capacitor and the reactor. One of these elements can be ignored by assigning a zero value to it in the control panel. The two resistances, the capacitor and the reactor form a type of black box. Hence, it is not possible to measure the voltage across one of the resistances or the reactor. However, the voltage across the capacitor is calculated and available as a signal. This is also the case for the voltages across the thyristors.
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Mask and Parameters
Parameters
| Name | Description | Unit | Variable = {Possible Values} | |
|---|---|---|---|---|
| Control Type | Control inputs to the block - External input pins or sensors | |||
| Precision Valve | Enable: Precision valve is used which corrects for any errors due to digitization Disable: Precision feature not used | {Enable, Disable} | ||
| Connections | Y ground; Y floating; Delta | |||
| r | Resistance in parallel with branch reactor | Ohm | {(0,1e12]} | |
| L | Series inductance | H | {(0,1e12]} | |
| R | Branch resistance | Ohm | {(0,1e12]} | |
| C | Branch capacitance | F | {(0,1e12]} | |
| Rsnubber | Snubber resistance | Ohm | {[0,1e12]} | |
| Csnubber | Snubber capacitance | F | {[0,1e12]} | |
| Ropen | Valve resistance when open | Ohm | {(0,1e12]} | |
| Rclose | Valve resistance when closed | Ohm | {(0,1e12]} | |
| Imin | Chopping current | A | {[0,1e12]} | |
| Fbov | Forward break overvoltage | V | {[0,1e12]} | |
| Rbov | Reverse break overvoltage | V | {[0,1e12]} | |
| Tq | Time for the valve to stop conducting | s | {[0,1e12]} | |
| Vmin | Minimum forward voltage across valve to conduct | V | {[0,1e12]} | |
Ports, Inputs, Outputs and Signals Available for Monitoring
Ports
| Name | Description |
|---|---|
| Net_1 | Network connection (supports only 3-phase connections) |
Inputs
| Name | Description |
|---|---|
D | Delay used for the precision valve measured from changing point to current time step |
P | Binary coded firing pulses |
Outputs
None
Sensors
Name | Description | Unit |
CMD12_x where (x= a,b,c) | Firing pulse of the positive valve in the x branch | |
CMD21_x where (y= a,b,c) | Firing pulse of the negative valve in the x branch | |
I_x where (x= a,b,c) | Current through the branch | A |
STATE12_x(where x=a,b,c) | State of the positive valve in the x branch | |
STATE21_x(where x=a,b,c) | State of the negative valve in the x branch | |
D | Delay used for the precision valve measured from changing point to current time step | s |
P | Binary coded firing pulses | |
DelayImpInt | Firing delay (as a fraction of calculation step) calculated by the internal command | s |
DelayImpExt | Firing delay (as a fraction of calculation step) calculated by an external command | s |
DelayImp | Firing delay (as a fraction of calculation step) | s |
DelayImpUsed | Firing delay (as a fraction of calculation step) | s |