WOLFRAM SYSTEMMODELER

Admittance

Single phase linear admittance

Wolfram Language

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SystemModel["Modelica.Electrical.QuasiStationary.SinglePhase.Basic.Admittance"]
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Information

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

The admittance model represents a parallel connection of a conductor and either a capacitor or inductor.

The linear admittance connects the voltage v with the current i by i = Y*v. The resistive component is modeled temperature dependent, so the real part G_actual = real(Y) is determined from the actual operating temperature and the reference input conductance real(Y_ref). A conditional heat port is considered. The reactive component B_actual = imag(Y) is equal to imag(Y_ref) if frequencyDependent = false. Frequency dependency is considered by frequencyDependent = true, distinguishing two cases:

(a) imag(Y_ref) > 0: capacitive case
The actual susceptance B_actual is proportional to f/f_ref
(b) imag(Y_ref) < 0: inductive case
The actual susceptance B_actual is proportional to f_ref/f

See also

Resistor, Conductor, Capacitor, Impedance, Variable resistor, Variable conductor, Variable capacitor, Variable inductor, Variable impedance, Variable admittance

Parameters (9)

useHeatPort

Value: false

Type: Boolean

Description: =true, if heatPort is enabled

T

Value: T_ref

Type: Temperature (K)

Description: Fixed device temperature if useHeatPort = false

Y_ref

Value:

Type: ComplexAdmittance

Description: Complex admittance G_ref + j*B_ref

T_ref

Value: 293.15

Type: Temperature (K)

Description: Reference temperature

alpha_ref

Value: 0

Type: LinearTemperatureCoefficient (ยน/K)

Description: Temperature coefficient of resistance (R_actual = R_ref*(1 + alpha_ref*(heatPort.T - T_ref))

frequencyDependent

Value: false

Type: Boolean

Description: Consider frequency dependency, if true

f_ref

Value: 1

Type: Frequency (Hz)

Description: Reference frequency, if frequency dependency is considered

G_ref

Value: real(Y_ref)

Type: Conductance (S)

Description: Resistive component of conductance

B_ref

Value: imag(Y_ref)

Type: Susceptance (S)

Description: Reactive component of susceptance

Connectors (3)

pin_p

Type: PositivePin

Description: Positive quasi-static single-phase pin

pin_n

Type: NegativePin

Description: Negative quasi-static single-phase pin

heatPort

Type: HeatPort_a

Description: Conditional heat port

Components (3)

v

Type: ComplexVoltage

Description: Complex voltage

i

Type: ComplexCurrent

Description: Complex current

Y_ref

Type: ComplexAdmittance

Description: Complex admittance G_ref + j*B_ref

Used in Components (1)

Admittance

Modelica.Electrical.QuasiStationary.MultiPhase.Basic

Multiphase linear admittance