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

The admittance model represents a parallel connection of a resistor and either a capacitor or inductor in each phase.

The linear admittance connects the complex voltage v with the complex current i by v*Y = i in each phase, using m variable single-phase admittances. The admittances Y_ref = G_ref + j*B_ref are given as complex input signals, representing the resistive and reactive components of the input admittances. The resistive components are modeled temperature dependent, so the real part G_actual = real(Y) are determined from the actual operating temperatures and the reference input conductances real(Y_ref). Conditional heat ports are considered. The reactive components B_actual = imag(Y) are 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 susceptances B_actual are proportional to f/f_ref

(b) imag(Y_ref) < 0: inductive case

The actual susceptances B_actual are proportional to f_ref/f

Note

Zero crossings of the real or imaginary parts of the admittance signals Y_ref could cause singularities due to the actual structure of the connected network.

See also

VariableResistor, Resistor, Conductor, Capacitor, Inductor, Impedance, Admittance, Variable conductor, Variable capacitor, Variable inductor Variable impedance,