Controlled Temperature Grounded fed by Ramp Input Signal

[THK]

Hello,

I would like to define a variable ambient temperature in the thermal analysis of my inverter model. The ambient temperature should initially be 25°C and reach 50°C after 120 seconds.

For this purpose, I had provided a Controlled Temperature Grounded, which is fed by a ramp signal (see Figure 1). Unfortunately, the thermal simulation does not take into account a linearly increasing ambient temperature as the ramp input signal is simply ignored.

However, if I feed the Controlled Temperature Grounded with a Constant Signal Block, the given value, e.g. 25°, is taken over by the Controlled Temperature. (see Figure 2)

So what would be the basic procedure for taking into account a linearly increasing ambient temperature in a specific time window in a thermal simulation?

I look forward to your feedback!

Best regards

THK

[Kris_Eberle]

Your ramp signal as a controlled temperature input should work as you intend, so can you please include a simulation model or more information about why “the thermal simulation does not take it into account”?