Impedance
Multiphase linear impedance
Library
Modelica/Electrical/QuasiStationary/MultiPhase/Basic
Description
The impedance model represents a series connection of a resistor and either an inductor or capacitor
in each phase.
The linear impedance connects the voltage v with the
current i by v = Z*i in each phase, using m
singlephase impedances.
The resistive
components are modeled temperature dependent, so the real parts R_actual = real(Z) are determined from
the actual operating temperatures and the reference input resistances real(Z_ref).
Conditional heat ports are considered.
The reactive components X_actual = imag(Z)
are equal to imag(Z_ref) if frequencyDependent = false.
Frequency dependency is considered by frequencyDependent = true, distinguishing two cases:
- (a)
imag(Z_ref) > 0: inductive case - The actual reactances
X_actualare proportional tof/f_ref - (b)
imag(Z_ref) < 0: capacitive case - The actual reactances
X_actualare proportional tof_ref/f
See also
Impedance, Resistor, Conductor, Capacitor, Inductor, Admittance, 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_Z_ref | Z_ref | Complex impedances R_ref + j*X_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_abs_v | abs_v | abs_v | Structure | |
mo_abs_v/fixed | fixed | Cell of vectors | true | |
mo_abs_v/start | start | Cell of vectors | ||
mo_arg_v | arg_v | arg_v | Structure | |
mo_arg_v/fixed | fixed | Cell of vectors | true | |
mo_arg_v/start | start | Cell of vectors | ||
mo_abs_i | abs_i | abs_i | Structure | |
mo_abs_i/fixed | fixed | Cell of vectors | true | |
mo_abs_i/start | start | Cell of vectors | ||
mo_arg_i | arg_i | arg_i | Structure | |
mo_arg_i/fixed | fixed | Cell of vectors | true | |
mo_arg_i/start | start | Cell of vectors | ||
mo_P | P | P | Structure | |
mo_P/fixed | fixed | Cell of vectors | true | |
mo_P/start | start | Cell of vectors | ||
mo_P_total | P_total | P_total | Structure | |
mo_P_total/fixed | fixed | Cell of scalars | true | |
mo_P_total/start | start | Cell of scalars | ||
mo_Q | Q | Q | Structure | |
mo_Q/fixed | fixed | Cell of vectors | true | |
mo_Q/start | start | Cell of vectors | ||
mo_Q_total | Q_total | Q_total | Structure | |
mo_Q_total/fixed | fixed | Cell of scalars | true | |
mo_Q_total/start | start | Cell of scalars | ||
mo_S | S | S | Structure | |
mo_S/fixed | fixed | Cell of vectors | true | |
mo_S/start | start | Cell of vectors | ||
mo_S_total | S_total | S_total | Structure | |
mo_S_total/fixed | fixed | Cell of scalars | true | |
mo_S_total/start | start | Cell of scalars | ||
mo_pf | pf | pf | Structure | |
mo_pf/fixed | fixed | Cell of vectors | true | |
mo_pf/start | start | Cell of vectors | ||
mo_omega | omega | omega | Structure | |
mo_omega/fixed | fixed | Cell of scalars | true | |
mo_omega/start | start | Cell of scalars |
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 |