modelTrafoIdealBase
Extends from Ports.YDportTrafo_p_n (AC two port with Y or Delta topology for transformers).
Information
Terminology (formal, the models are symmetric).
- index 1 (term_p) "primary"
- index 2 (term_n) "secondary"
Contains choice of topology (Delta or Y connection primary and secondary).
Note that transformers with topology 'Delta-Y' and 'Y-Delta' exhibit a phase-shift
of the voltage signals Delta-side versus the signals Y-side of -30 deg.
Delta (prim) - Y (sec): Y is 30 deg shifted versus Delta
Y (prim) - Delta (sec): Delta is -30 deg shifted versus Y
Setting the parameter sh = +-1 shifts the secondary side by +-120 deg.
Transformer ratio.
The winding ratio is determined indirectly by the choice of nominal voltages and the topology of both primary and secondary side.
It may be > 1 or < 1.
Tap changers.
For constant transformer ratio no tap changer input needed.
For variable transformer ratio tap changer input needed.
The sequence of the parameters
v_tc tc voltage levels v_tc[1], v_tc[2], v_tc[3], ...
must be defined in accordance with the input-signals of
tap index of tap voltage levels, v_tc[tap]
Set dynTC = true if tap-index changes during simulation.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | stIni_en | true | enable steady-state initial equation |
| Boolean | dynTC | false | enable dynamic tap-changing |
| Parameters.TrafoIdeal | par | trafo parameter |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Base.Interfaces.ACdqo_p | term_p (from Port_p_n) | positive terminal | |
| Base.Interfaces.ACdqo_n | term_n (from Port_p_n) | negative terminal | |
| Modelica.Blocks.Interfaces.IntegerInput | tap_p | 1: index of voltage level | |
| Modelica.Blocks.Interfaces.IntegerInput | tap_n | 2: index of voltage level |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Topology.Y | top_p (from YDportTrafo_p_n) | p: Y or Delta topology | |
| Topology.Y | top_n (from YDportTrafo_p_n) | n: Y or Delta topology | |
| SI.Voltage | v1 (from YDportTrafo_p_n) | top_p.v_cond/w1 | voltage conductor |
| SI.Current | i1 (from YDportTrafo_p_n) | top_p.i_cond*w1 | current conductor |
| SI.Voltage | v_n1 (from YDportTrafo_p_n) | top_p.v_n | voltage neutral |
| SI.Current | i_n1 (from YDportTrafo_p_n) | top_p.i_n | current neutral to ground |
| SI.Voltage | v2 (from YDportTrafo_p_n) | top_n.v_cond/w2 | voltage conductor |
| SI.Current | i2 (from YDportTrafo_p_n) | top_n.i_cond*w2 | current conductor |
| SI.Voltage | v_n2 (from YDportTrafo_p_n) | top_n.v_n | voltage neutral |
| SI.Current | i_n2 (from YDportTrafo_p_n) | top_n.i_n | current neutral to ground |