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Application of a DC-DC boost converter with maximum power point tracking for low power thermoelectric generators

机译：具有最大功率点跟踪功能的DC-DC升压转换器在低功率热电发电机中的应用

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摘要

Thermoelectric generators (TEGs) directly generate electrical power from the geothermal/waste heat as well as contribute to efficient usage of the energy. TEGs cannot be operated at full capacity without additional electronic equipments, since the internal resistances of TEGs are not equal to the device resistances connected across TEGs. For this reason, in this paper, the application of a DC-DC boost converter with maximum power point tracking (MPPT) based on microcontroller embedded in perturb and observe (P&O) algorithm has been proposed to obtain maximum power from a newly designed portable TEG (pTEG) in a real TEG system. The matched condition load for the pTEG has been experimentally investigated. Firstly, the pTEG has been directly charged to the battery pack, secondly it has been charged through the improved convertor with MPPT. In the first one, the pTEG operated with less efficiency than half of its full capacity, whereas, in the second, the pTEG operated efficiency near its full capacity. (C) 2015 Elsevier Ltd. All rights reserved.
机译：热电发电机（TEG）直接从地热/废热中产生电能，并有助于有效利用能源。如果没有额外的电子设备，TEG不能满负荷运行，因为TEG的内部电阻不等于跨TEG连接的设备电阻。因此，在本文中，提出了一种基于嵌入在扰动和观测（P＆O）算法中的微控制器的具有最大功率点跟踪（MPPT）的DC-DC升压转换器的应用，以从新设计的便携式TEG获得最大功率（pTEG）在真实的TEG系统中。已对pTEG的匹配条件负荷进行了实验研究。首先，pTEG已直接充电到电池组，其次已通过带有MPPT的改进型转换器充电。在第一个中，pTEG的效率低于其全部容量的一半，而在第二个中，pTEG的效率接近其全部容量。 （C）2015 Elsevier Ltd.保留所有权利。

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