VariableAdmittanceSingle phase variable admittance 
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 (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 
pin_p 
Type: PositivePin Description: Positive quasistatic singlephase pin 


pin_n 
Type: NegativePin Description: Negative quasistatic singlephase 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.QuasiStationary.MultiPhase.Basic Multiphase variable admittance 