.Spot.ACdqo.Transformers.Partials.Trafo3IdealBase

Information

Terminology (formal, the models are symmetric).
  - index 1 (term_p) "primary"
  - index 2a (term_na) "secondary a"
  - index 2b (term_nb) "secondary b"

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.


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