.Buildings.Electrical.AC.OnePhase.Conversion.ACACTransformer

Information

This is a simplified equivalent transformer model. The model accounts for winding Joule losses and leakage reactances that are represented by a series of a resistance R and an inductance L. The resistance and the inductance represent both the effects of the secondary and primary side of the transformer.

The model is parameterized using the following parameters

• VHigh - RMS voltage at primary side,
• VLow - RMS voltage at secondary side,
• VABase - apparent nominal power of the transformer,
• XoverR - ratio between reactance and resistance, and
• Zperc - the short circuit impedance.

Given the nominal conditions,the model computes the values of the resistance and the inductance.

Revisions

• January 30, 2019, by Michael Wetter:
  Added missing replaceable for the terminal.
• November 28, 2016, by Michael Wetter:
  Made voltage public to allow setting a start value in Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.DY.
  This is for #584.
• September 4, 2014, by Michael Wetter:
  Revised model.
• August 5, 2014, by Marco Bonvini:
  Revised documentation.
• June 17, 2014, by Marco Bonvini:
  Adde parameter phi_1 and phi_2 that are used during initialization to specify the angle of the voltage phasor.
• June 9, 2014, by Marco Bonvini:
  Revised implementation and added stateSelect statement to use the current i[:] on the connectors as iteration variable for the initialization problem.
• January 29, 2012, by Thierry S. Nouidui:
  First implementation.