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

Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACACConverter

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

Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACACTransformer

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

Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACACTransformerFull

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

Buildings.Electrical.AC.ThreePhasesBalanced.Conversion.ACDCConverter

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;