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Characterization of commercial thermoelectric modules for application in energy harvesting wireless sensor nodes

机译：用于在能量收集无线传感器节点中应用商业热电模块的特征

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摘要

Thermal energy harvesting systems commonly exploit thermoelectric generators as power sources. This paper describes characterization of commercial thermoelectric cooling/heating modules, with the aim to select preferable ones for use as generators in energy harvesting wireless sensor nodes. Performed numerical electro-thermal analysis considers generators under three thermally different operating conditions (as standalone devices, with heatsink, and inside the wireless sensor node). Electrical load of the generators is determined by the power management circuitry. Characterization is performed by combining simulation results and current-voltage characteristic of the circuitry. Assessment of the generators is based on voltage and power transferred to the load at various temperature differences. Obtained results are experimentally verified by thermovision and, for the case of standalone devices, compared with an analytical approximation. It is determined that preferable generators can be selected on the basis of the power factor, figure-of-merit, or thermocouple legs length, depending on the imposed thermal operating conditions. (C) 2017 Elsevier Ltd. All rights reserved.
机译：热能收集系统通常利用热电发电机作为电源。本文介绍了商业热电冷却/加热模块的表征，其目的是选择优选的，用于在能量收集无线传感器节点中使用的发电机。执行的数控电热分析将发生器考虑在三种热不同的操作条件下（作为独立设备，散热器和无线传感器节点内）。发电机的电负载由电源管理电路确定。通过组合电路的仿真结果和电流电压特性来执行表征。发电机的评估基于电压和电力传递到载荷的各种温度差异。与分析近似相比，通过热敏通过Thermovision进行实验验证，并且对于独立设备进行实验验证。确定优选的发电机可以基于功率因数，图术或热电偶长度来选择，这取决于施加的热操作条件。 （c）2017 Elsevier Ltd.保留所有权利。

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