COMSOL simulation issue — power extraction from PN junction using Electric Circuit interface

abderrahmane bousabaa

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Hello everyone,

I’m currently working on a project in COMSOL where I simulate multiple PN junctions connected in a serpentine layout. I apply a thermal gradient (Seebeck effect) and successfully generate a voltage (~70 mV), but I’m struggling to calculate the extracted power.

I’ve tried adding the Electrical Circuit interface and connected a resistive load, but COMSOL won’t compile. I suspect that the circuit isn’t properly linked to the 3D physics, or I may be missing a terminal or an external connection setup.

Has anyone worked on a similar model or could point me to a tutorial/example showing how to connect a terminal from a thermo-electric model to an external circuit and extract power?

Any help or guidance would be greatly appreciated.

Thank you!



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