Impedance
Single phase linear impedance
Library
Modelica/Electrical/QuasiStationary/SinglePhase/Basic
Description
The impedance model represents a series connection of a resistor and either an inductor or capacitor.
The linear impedance connects the voltage v with thecurrent i by v = Z*i. The resistivecomponent is modeled temperature dependent, so the real part R_actual = real(Z) is determined fromthe actual operating temperature and the reference input resistance real(Z_ref).A conditional heat port is considered.The reactive component X_actual = imag(Z)is 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 reactance
X_actualis proportional tof/f_ref - (b)
imag(Z_ref) < 0: capacitive case - The actual reactance
X_actualis proportional tof_ref/f
See also
Resistor,Conductor,Capacitor,Admittance,Variable resistor,Variable conductor,Variable capacitor,Variable inductor,Variable impedance,Variable admittance
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_T_heatPort | T_heatPort | T_heatPort | Structure | |
mo_T_heatPort/fixed | fixed | Cell of scalars | true | |
mo_T_heatPort/start | start | Cell of scalars | ||
mo_Z_ref | Z_ref | Complex impedance R_ref + j*X_ref | ||
mo_T_ref | T_ref | Reference temperature | Scalar | |
mo_alpha_ref | alpha_ref | Temperature coefficient of resistance (R_actual = R_ref*(1 + alpha_ref*(heatPort.T - T_ref)) | Scalar | |
mo_useHeatPort | useHeatPort | =true, if heatPort is enabled | Number | 0 |
mo_T | T | Fixed device temperature if useHeatPort = false | Scalar | |
mo_frequencyDependent | frequencyDependent | Consider frequency dependency, if true | Scalar | true |
mo_f_ref | f_ref | Reference frequency, if frequency dependency is considered | Scalar | |
mo_R_ref | R_ref | Resistive component of impedance, resistance | Scalar | |
mo_X_ref | X_ref | Reactive component of impedance, reactance | 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 |
|---|---|---|---|---|
pin_p | implicit | Positive quasi-static single-phase pin | input | 1 |
pin_n | implicit | Negative quasi-static single-phase pin | output | 1 |
Port 3 | implicit | Conditional heat port | input | mo_useHeatPort |