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.
Name | Description |
---|---|
Data | trafo parameters |