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Thermoelectric generator with a load resistance below internal TEG resistance
Posted 03.06.2019, 06:14 GMT-4 Electromagnetics, Electromagnetic Heating, Heat Transfer & Phase Change Version 5.2a 1 Reply
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Dear Experts,
I have modelled a single thermoelectric generator (TEG) coupling in COMSOL and connected a electrical circuit consisting of a single resistor using 'External I vs. U' coupling. Using a stationary solution, the output electrical potential and current are as expected for resistances above the internal resistance of the TEG.
However, I am unable to converge on a solution when the resistance of the load is below the internal resistance of the TEG. Papers published on the COMSOL website show graphs with resistances all the way down to 0[ohm].
Could anyone recommend a solution. Please find the model (v5.2a).
Kind Regards, David
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Update: Using the Fully Coupled mode in the Study option solves this problem.