Theoretical, experimental and numerical diagnose of critical power point of thermoelectric generators

摘要: Abstract When a number of TEMs (thermoelectric modules) are connected in series–parallel matrix and under mismatched temperature gradients, the overall maximum output power thermoelectric generator (TEG) may be lowered by certain with relatively smaller difference. It is possible to avoid such performance decrease disconnection these low TEMs, provided that critical point can accurately determined. In this paper, firstly rigorous universal formulation fully detailed mathematically determine conceptions conditions series parallel TEM arrays. Secondly, experiments hybrid interconnected TEG presented clearly quantify theoretical analyses. Finally, hierarchical simulation, based on SPICE (simulation program integrated circuit emphasis) platform, applied estimate point. By numerically modeling nonlinear physical processes TEG, simulation used as an enabling technique any model-based controller dynamically minimize mismatch loss within configuration. experimental numerical results, points disclosed for 2 × 4 parallel–serial matrix, where hot mostly ranges from 120 °C 60 °C.