This example shows the effect of sweeping the load resistance from 0 to 10 Ohms. The rate of change is one Ohm per second, so that the time value corresponds to the instantaneous load resistance value. The example TEC/TEG represents a CUI CP60340 Peltier Module.
The TEC appears to be capable of generating approximately 0.9 Watt (maximum power, see magenta waveform) with a temperature differential of 75 degC and perfect thermal coupling, and the hot side at a constant 100 degC.
This test schematic can be reused to calibrate other TEC/TEG models and under various differential temperature and loading conditions.