Description: "Package with transformers and converter models for three-phase balanced AC systems"

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## Buildings.Electrical.AC.ThreePhasesBalanced.Conversion

Package with transformers and converter models for three-phase balanced AC systems

### Information

This package contains models for three-phase balanced AC/AC transformers and AC/DC converters.

Extends from Modelica.Icons.Package (Icon for standard packages).

### Package Content

Name | Description
--- | ---
ACACConverter | AC AC converter three phase balanced systems
ACACTransformer | AC AC transformer three phase balanced systems
ACACTransformerFull | AC AC transformer full model for three phase balanced systems
ACDCConverter | AC DC converter
Examples | Package with example models

## Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACACConverter

AC AC converter three phase balanced systems

### Information

This model represents a simplified conversion between two AC three-phase balanced systems. The conversion losses are represented by a constant efficiency η.

See model Buildings.Electrical.AC.OnePhase.Conversion.ACACConverter for more information.

Extends from Buildings.Electrical.AC.OnePhase.Conversion.ACACConverter (AC AC converter single phase systems).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Real | conversionFactor |  | Ratio of QS rms voltage on side 2 / QS rms voltage on side 1
Real | eta |  | Converter efficiency, pLoss = (1-eta) * Ptr
Ground
side 1
Boolean | ground_1 | false | If true, connect side 1 of converter to ground
side 2
Boolean | ground_2 | true | If true, connect side 2 of converter to ground

### Modelica definition

model ACACConverter "AC AC converter three phase balanced systems" extends Buildings.Electrical.AC.OnePhase.Conversion.ACACConverter( redeclare Interfaces.Terminal_n terminal_n, redeclare Interfaces.Terminal_p terminal_p); end ACACConverter;

## Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACACTransformer

AC AC transformer three phase balanced systems

### Information

Simple transformer model for three-phase balanced AC systems. The model does not include core and magnetic losses.

See model Buildings.Electrical.AC.OnePhase.Conversion.ACACTransformer for more information.

Extends from Buildings.Electrical.AC.OnePhase.Conversion.ACACTransformer (AC AC transformer simplified equivalent circuit).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Voltage | VHigh |  | Rms voltage on side 1 of the transformer (primary side) [V]
Voltage | VLow |  | Rms voltage on side 2 of the transformer (secondary side) [V]
ApparentPower | VABase |  | Nominal power of the transformer [VA]
Real | XoverR |  | Ratio between the complex and real components of the impedance (XL/R)
Real | Zperc |  | Short circuit impedance
Ground
side 1
Boolean | ground_1 | false | If true, connect side 1 of converter to ground
side 2
Boolean | ground_2 | true | If true, connect side 2 of converter to ground
Initialization
Angle | phi_1 | 0 | Angle of the voltage side 1 at initialization [rad]
Angle | phi_2 | phi_1 | Angle of the voltage side 2 at initialization [rad]

### Modelica definition

model ACACTransformer "AC AC transformer three phase balanced systems" extends Buildings.Electrical.AC.OnePhase.Conversion.ACACTransformer( redeclare Interfaces.Terminal_n terminal_n, redeclare Interfaces.Terminal_p terminal_p); end ACACTransformer;

## Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACACTransformerFull

AC AC transformer full model for three phase balanced systems

### Information

Model of a transformer for three-phase balanced AC systems. The model includes core and magnetic losses.

See model Buildings.Electrical.AC.OnePhase.Conversion.ACACTransformerFull for more information.

Extends from Buildings.Electrical.AC.OnePhase.Conversion.ACACTransformerFull (AC AC transformer with detailed equivalent circuit).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Voltage | VHigh |  | RMS voltage on side 1 of the transformer (primary side) [V]
Voltage | VLow |  | RMS voltage on side 2 of the transformer (secondary side) [V]
ApparentPower | VABase |  | Nominal power of the transformer [VA]
Frequency | f |  | Nominal frequency [Hz]
PerUnit | R1 |  | Resistance on side 1 of the transformer (pu) [1]
PerUnit | L1 |  | Inductance on side 1 of the transformer (pu) [1]
PerUnit | R2 |  | Resistance on side 2 of the transformer (pu) [1]
PerUnit | L2 |  | Inductance on side 2 of the transformer (pu) [1]
Magnetization
Boolean | magEffects | false | If true, introduce magnetization effects
PerUnit | Rm |  | Magnetization resistance (pu) [1]
PerUnit | Lm |  | Magnetization inductance (pu) [1]
Ground
side 1
Boolean | ground_1 | false | Connect side 1 of converter to ground
side 2
Boolean | ground_2 | true | Connect side 2 of converter to ground
Initialization
Angle | phi_1 | 0 | Angle of the voltage side 1 at initialization [rad]
Angle | phi_2 | phi_1 | Angle of the voltage side 2 at initialization [rad]

### Modelica definition

model ACACTransformerFull "AC AC transformer full model for three phase balanced systems" extends Buildings.Electrical.AC.OnePhase.Conversion.ACACTransformerFull( redeclare Interfaces.Terminal_n terminal_n, redeclare Interfaces.Terminal_p terminal_p); end ACACTransformerFull;

## Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACDCConverter

AC DC converter

### Information

This model represents a simplified conversion between a three-phase balanced AC system and a DC systems.

See model Buildings.Electrical.AC.OnePhase.Conversion.ACDCConverter for more information.

Extends from Buildings.Electrical.AC.OnePhase.Conversion.ACDCConverter (AC DC converter).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Real | conversionFactor |  | Ratio of DC voltage / AC RMS voltage
Real | eta |  | Converter efficiency, pLoss = (1-eta) * Ptr
Ground
AC side
Boolean | ground_AC | false | Connect AC side of converter to ground
DC side
Boolean | ground_DC | true | Connect DC side of converter to ground

### Connectors

Type | Name | Description
--- | --- | ---
Terminal_p | terminal_p | Electric terminal side n

### Modelica definition

model ACDCConverter "AC DC converter" extends Buildings.Electrical.AC.OnePhase.Conversion.ACDCConverter( redeclare Interfaces.Terminal_n terminal_n); end ACDCConverter;