WOLFRAM SYSTEMMODELER

HeatingResistor

Temperature dependent electrical resistor

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SystemModel["Modelica.Electrical.Analog.Basic.HeatingResistor"]
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Information

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

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*1.e-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.

Connectors (3)

p

Type: PositivePin

Description: Positive pin (potential p.v > n.v for positive voltage drop v)

n

Type: NegativePin

Description: Negative pin

heatPort

Type: HeatPort_a

Description: Conditional heat port

Parameters (5)

useHeatPort

Value: true

Type: Boolean

Description: =true, if heatPort is enabled

T

Value: T_ref

Type: Temperature (K)

Description: Fixed device temperature if useHeatPort = false

R_ref

Value:

Type: Resistance (Ω)

Description: Resistance at temperature T_ref

T_ref

Value: 300.15

Type: Temperature (K)

Description: Reference temperature

alpha

Value: 0

Type: LinearTemperatureCoefficient (¹/K)

Description: Temperature coefficient of resistance (R = R_ref*(1 + alpha*(heatPort.T - T_ref))

Used in Examples (2)

HeatingResistor

Heating resistor

ControlledTemperature

Control temperature of a resistor