From constant to temperature dependent parameters based electrothermal models of TEG

The paper presents a comparative analysis of three different electrothermal models of a thermoelectric generator (TEG) implemented in SPICE. It starts from a model that is based on the constant parameters theory. Next, the one that takes into account a mean temperature at the both sides of the thermogenerator is described. Finally, an improved model is shown that calculates the values of parameters according to the actual temperatures at the hot and cold sides of a Peltier module respectively. Results of simulations for these three models are presented and discussed.