BuildingSystems.Electrical.AC.ThreePhasesUnbalanced.Conversion.ACACTransformerStepUpDY

# .BuildingSystems.Electrical.AC.ThreePhasesUnbalanced.Conversion.ACACTransformerStepUpDY

AC AC transformer simplified equivalent circuit (DY step up)

## Information

This is a simplified equivalent transformer model with Delta-Y connection (voltage step up). 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 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 inductance.

#### Configuration:

The image below describes the connection of the windings.

#### Note:

This model reuses models from BuildingSystems.Electrical.AC.OnePhase.Conversion.ACACTransformer.

See BuildingSystems.Electrical.AC.ThreePhasesUnbalanced.Conversion.BaseClasses.PartialConverterStepUpDY for details on the connections.

## Revisions

- October 3, 2014, by Marco Bonvini:
  Revised documentation.
- June 6, 2014, by Marco Bonvini:
  First implementation.

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