WOLFRAM SYSTEM MODELER
VariableAdmittanceSingle-phase variable admittance |
SystemModel["Modelica.Electrical.QuasiStatic.SinglePhase.Basic.VariableAdmittance"]
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 complex voltage v
with the
complex current i
by v*Y = i
.
The admittance Y_ref = G_ref + j*B_ref
is given as complex input signal, representing the
resistive and reactive component of the input admittance. 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)
.
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:
imag(Y_ref) > 0
: capacitive caseB_actual
is proportional to f/f_ref
imag(Y_ref) < 0
: inductive caseB_actual
is proportional to f_ref/f
A zero crossing of the real or imaginary part of the admittance signal Y_ref
could cause
singularities due to the actual structure of the connected network.
Resistor, Conductor, Capacitor, Inductor, Impedance, Admittance, Variable resistor, Variable conductor, Variable capacitor, Variable inductor, Variable impedance
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 |
T_ref |
Value: 293.15 Type: Temperature (K) Description: Reference temperature |
alpha_ref |
Value: 0 Type: LinearTemperatureCoefficient (1/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 |
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 |
|
Y_ref |
Type: ComplexInput Description: Variable complex admittance |
v |
Type: ComplexVoltage Description: Complex voltage |
|
---|---|---|
i |
Type: ComplexCurrent Description: Complex current |
Modelica.Electrical.QuasiStatic.Polyphase.Basic Polyphase variable admittance |