WOLFRAM

WOLFRAM SYSTEM MODELER

PartialBasicTransformer

Partial model of three-phase transformer

Diagram

Wolfram Language

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SystemModel["Modelica.Electrical.QuasiStatic.Machines.Interfaces.PartialBasicTransformer"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Partial model of a three-phase transformer, containing primary and secondary resistances and stray inductances, as well as the iron core. Circuit layout (vector group) of primary and secondary windings have to be defined.
Default values for transformer's parameters (a realistic example) are:
turns ratio n 1
nominal frequency fNominal 50Hz
nominal voltage per phase 100V RMS
nominal current per phase 100A RMS
nominal apparent power 30kVA
primary resistance R1 0.005Ohm per phase at reference temperature
reference temperature T1Ref 20°C
temperature coefficient alpha20_1 01/K
primary stray inductance L1sigma 78E-6H per phase
secondary resistance R2 0.005Ohm per phase at reference temperature
reference temperature T2Ref 20°C
temperature coefficient alpha20_2 01/K
secondary stray inductance L2sigma 78E-6H per phase
operational temperature T1Operational 20°C
operational temperature T2Operational 20°C
These values give the operational parameters:
nominal voltage drop 0.05p.u.
nominal copper losses 300W

Parameters (12)

n

Value:

Type: Real

Description: Ratio primary voltage (line-to-line) / secondary voltage (line-to-line)
R1

Value:

Type: Resistance (Ω)

Description: Primary resistance per phase at TRef
T1Ref

Value:

Type: Temperature (K)

Description: Reference temperature of primary resistance
alpha20_1

Value:

Type: LinearTemperatureCoefficient20 (1/K)

Description: Temperature coefficient of primary resistance at 20 degC
L1sigma

Value:

Type: Inductance (H)

Description: Primary stray inductance per phase
R2

Value:

Type: Resistance (Ω)

Description: Secondary resistance per phase at TRef
T2Ref

Value:

Type: Temperature (K)

Description: Reference temperature of secondary resistance
alpha20_2

Value:

Type: LinearTemperatureCoefficient20 (1/K)

Description: Temperature coefficient of secondary resistance at 20 degC
L2sigma

Value:

Type: Inductance (H)

Description: Secondary stray inductance per phase
useThermalPort

Value: false

Type: Boolean

Description: Enable / disable (=fixed temperatures) thermal port
T1Operational

Value:

Type: Temperature (K)

Description: Operational temperature of primary resistance
T2Operational

Value:

Type: Temperature (K)

Description: Operational temperature of secondary resistance

Outputs (5)

powerBalance

Type: PowerBalanceTransformer

Description: Power balance
v1

Default Value: plug1.pin.v

Type: ComplexVoltage[m]

Description: Primary voltage
i1

Default Value: plug1.pin.i

Type: ComplexCurrent[m]

Description: Primary current
v2

Default Value: plug2.pin.v

Type: ComplexVoltage[m]

Description: Secondary voltage
i2

Default Value: plug2.pin.i

Type: ComplexCurrent[m]

Description: Secondary current

Connectors (4)

plug1

Type: PositivePlug

Description: Primary plug
plug2

Type: NegativePlug

Description: Secondary plug
thermalPort

Type: ThermalPortTransformer

Description: Thermal port of transformers
internalThermalPort

Type: ThermalPortTransformer

Description: Thermal port of transformers

Components (11)

powerBalance

Type: PowerBalanceTransformer

Description: Power balance
v1

Type: ComplexVoltage[m]

Description: Primary voltage
i1

Type: ComplexCurrent[m]

Description: Primary current
v2

Type: ComplexVoltage[m]

Description: Secondary voltage
i2

Type: ComplexCurrent[m]

Description: Secondary current
r1

Type: Resistor

Description: Polyphase linear resistor
l1sigma

Type: Inductor

Description: Polyphase linear inductor
r2

Type: Resistor

Description: Polyphase linear resistor
l2sigma

Type: Inductor

Description: Polyphase linear inductor
core

Type: IdealCore

Description: Ideal transformer with 3 windings
thermalAmbient

Type: ThermalAmbientTransformer

Description: Thermal ambient for transformers

Extended by (36)

Dz10

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dz

Transformer Dz10

Dz08

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dz

Transformer Dz8

Dz06

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dz

Transformer Dz6

Dz04

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dz

Transformer Dz4

Dz02

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dz

Transformer Dz2

Dz00

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dz

Transformer Dz0

Dd10

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dd

Transformer Dd10

Dd08

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dd

Transformer Dd8

Dd06

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dd

Transformer Dd6

Dd04

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dd

Transformer Dd4

Dd02

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dd

Transformer Dd2

Dd00

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dd

Transformer Dd0

Dy11

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dy

Transformer Dy11

Dy09

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dy

Transformer Dy9

Dy07

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dy

Transformer Dy7

Dy05

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dy

Transformer Dy5

Dy03

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dy

Transformer Dy3

Dy01

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Dy

Transformer Dy1

Yz11

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yz

Transformer Yz11

Yz09

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yz

Transformer Yz9

Yz07

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yz

Transformer Yz7

Yz05

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yz

Transformer Yz5

Yz03

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yz

Transformer Yz3

Yz01

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yz

Transformer Yz1

Yd11

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yd

Transformer Yd11

Yd09

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yd

Transformer Yd9

Yd07

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yd

Transformer Yd7

Yd05

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yd

Transformer Yd5

Yd03

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yd

Transformer Yd3

Yd01

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yd

Transformer Yd1

Yy10

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yy

Transformer Yy10

Yy08

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yy

Transformer Yy8

Yy06

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yy

Transformer Yy6

Yy04

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yy

Transformer Yy4

Yy02

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yy

Transformer Yy2

Yy00

Modelica.Electrical.QuasiStatic.Machines.BasicMachines.Transformers.Yy

Transformer Yy0