Admittance
Multiphase linear admittance
Library
Modelica/Electrical/QuasiStationary/MultiPhase/Basic
Description
The admittance model represents a parallel connection of a resistor and either a capacitor or inductorin each phase.
The linear admittance connects the voltage v with thecurrent i by i = Y*v in each phase, using msinglephase admittances.The resistivecomponents are modeled temperature dependent, so the real parts G_actual = real(Y) are determined fromthe actual operating temperatures and the reference input conductances real(Y_ref).Conditional heat ports are considered.The reactive componentsB_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_actualare proportional tof/f_ref - (b)
imag(Y_ref) < 0: inductive case - The actual susceptances
B_actualare proportional tof_ref/f
See also
Admittance,Resistor,Conductor,Capacitor,Impedance,Variable resistor,Variable conductor,Variable capacitor,Variable inductor,Variable impedance,Variable admittance
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_m | m | Number of phases | Scalar | |
mo_Y_ref | Y_ref | Complex admittances G_ref + j*B_ref | ||
mo_T_ref | T_ref | Reference temperatures | Vector | |
mo_alpha_ref | alpha_ref | Temperature coefficient of resistance (R_actual = R_ref*(1 + alpha_ref*(heatPort.T - T_ref)) | Vector | |
mo_mh | mh | Number of heatPorts=number of phases | Scalar | |
mo_useHeatPort | useHeatPort | =true, if all heat ports are enabled | Number | 0 |
mo_T | T | Fixed device temperatures if useHeatPort = false | Vector | |
mo_frequencyDependent | frequencyDependent | Consider frequency dependency, if true | Scalar | true |
mo_f_ref | f_ref | Reference frequency, if frequency dependency is considered | Scalar |
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo__nmodifiers | Number of Modifiers | Specifies the number of modifiers | Number | |
mo__modifiers | Modifiers | Add new modifier | Structure | |
mo__modifiers/varname | Variable name | Cell of strings | 'abs_v' | |
mo__modifiers/attribute | Attribute | Cell of strings | 'start' | |
mo__modifiers/value | Value |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
plug_p | implicit | Positive quasi-static polyphase plug | input | 1 |
plug_n | implicit | Negative quasi-static polyphase plug | output | 1 |
Port 3 | implicit | Conditional heat ports | input | mo_useHeatPort |