Model resistor with thermal port
The Thermal Resistor block represents a temperature-dependent resistor. The resistance when the temperature at the thermal port is T is
R = R0(1+α(T–T0))
R0 is the nominal resistance at the reference temperature T0.
α is the temperature coefficient.
The following equation describes the thermal behavior of the block:
Q is the net heat flow into port A.
Kd is the Dissipation factor parameter value.
tc is the Thermal time constant parameter value.
dT/dt is the rate of change of the temperature.
i is the current through the resistor.
The nominal resistance of the thermistor at the reference temperature. Many datasheets quote the nominal resistance at 25°C (298.15 K) and list it as R25. The default value is 1 Ω.
The temperature at which the nominal resistance was measured. The default value is 298.15 K.
The coefficient α in the equation that describes resistance as a function of temperature. The default value is 5e-05 1/K.
The time it takes the resistor temperature to reach 63% of the final temperature change when a step change in ambient temperature occurs. The default value is 10 s.
The thermal power required to raise the thermal resistor temperature by one K. The default value is 0.001 W/K.
The temperature of the thermal resistor at the start of the simulation. The default value is 298.15 K.
The block has the following ports: