[PSIM 2022.2]Need assistance with IGBT and Diode Temperature Settings in PSIM 2022.2

Pantelis Tsipis

Hello,

I am working on a model that utilizes an IGBT component where the IGBT's temperature is set at 125 °C, while the antiparallel diode's temperature is set at 75 °C .

In the version I am currently using (PSIM 2022.2), I believe there is no equivalent component that allows me to impose separate temperatures for the IGBT and the diode.

I attempted to use the component shown in the image below, but it appears I can only impose a single temperature for the entire device.

My objective is to use an IGBT with an antiparallel diode and set different, constant temperatures for the IGBT and the diode throughout the simulation.

Could you please advise if this is possible with the current version of PSIM or suggest an alternative method to achieve this?

Albert_Dunford

What you are trying to do is not possible for a real device with a co-pak diode, as a result a few years ago we simplified the way the thermal models work for the majority of use cases. Unfortunately you'll need to do a workaround that isn't too painful. I've made an example here, you can just put an ideal diode in series with the IGBT and then define a parallel path with your diode (or IGBT model held off).

You can see how the Q1 device has current flowing through the switch or diode, then the Q2 only carries the switch path and D2 is handling the diode path. You could use an IGBT held off in its place!