HeatingResistor
Temperature dependent electrical resistor
Library
Modelica/Electrical/Analog/Basic
Description
This is a model for an electrical resistor where the generated heat is dissipated to the environment via connector heatPort and where the resistance R is temperature dependent according to the following equation:
R = R_ref*(1 + alpha*(heatPort.T - T_ref))
alpha is the temperature coefficient of resistance, which is often abbreviated as TCR. In resistor catalogues, it is usually defined as X [ppm/K] (parts per million, similarly to percentage) meaning X*1e-6 [1/K]. Resistors are available for 1 .. 7000 ppm/K, i.e., alpha = 1e-6 .. 7e-3 1/K;
Via parameter useHeatPort the heatPort connector can be enabled and disabled (default = enabled). If it is disabled, the generated heat is transported implicitly to an internal temperature source with a fixed temperature of T_ref.
If the heatPort connector is enabled, it must be connected.
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_R_ref | R_ref | Resistance at temperature T_ref | Scalar | |
mo_T_ref | T_ref | Reference temperature | Scalar | |
mo_alpha | alpha | Temperature coefficient of resistance (R = R_ref*(1 + alpha*(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 |
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_v | v | v | Structure | |
mo_v/fixed | fixed | Cell of scalars | true | |
mo_v/start | start | Cell of scalars | ||
mo_i | i | i | Structure | |
mo_i/fixed | fixed | Cell of scalars | true | |
mo_i/start | start | Cell of scalars | ||
mo_LossPower | LossPower | LossPower | Structure | |
mo_LossPower/fixed | fixed | Cell of scalars | true | |
mo_LossPower/start | start | Cell of scalars | ||
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_R | R | R | Structure | |
mo_R/fixed | fixed | Cell of scalars | true | |
mo_R/start | start | Cell of scalars |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
p | implicit | Positive electrical pin | input | 1 |
n | implicit | Negative electrical pin | output | 1 |
Port 3 | implicit | Conditional heat port | input | mo_useHeatPort |