Analysis of boost conversion process for a thermoelectric module

J. Sim, Rozli Zulkifli, S. Abdullah, Z. Harun
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Abstract

Thermoelectric modules are a useful way to extract waste energy from a readily available low quality heat source. However, the voltage generated by these modules varies with the temperature difference across its surfaces which are prone to fluctuations. Furthermore, the amount of voltage generated by individual modules is low. This can be rectified using voltage converters to stabilise the output voltage at the expense of some efficiency. In the case where a minimal number of modules are being used, a boost converter can be used to increase the input voltage from the thermoelectric modules to a higher level. Our previous study showed the results of the boost conversion process for multiple temperature differences, resulting in multiple input voltages and currents and found that the conversion efficiency increases with increasing input voltage at an almost constant input current. In this paper, we compare the experimental results for conversion efficiency against the expected values provided by the manufacturer, and find that when the input voltage is closer to the desired output voltage, the conversion efficiency increases.
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热电模块升压转换过程分析
热电模块是从容易获得的低质量热源中提取废能量的有用方法。然而,这些模块产生的电压随着其表面的温差而变化,这很容易发生波动。此外,由各个模块产生的电压量是低的。这可以使用电压转换器进行整流,以稳定输出电压,而牺牲一些效率。在使用最小数量的模块的情况下,可以使用升压转换器将热电模块的输入电压增加到更高的水平。我们之前的研究显示了多个温差的升压转换过程的结果,导致多个输入电压和电流,并发现在几乎恒定的输入电流下,转换效率随着输入电压的增加而增加。在本文中,我们将转换效率的实验结果与制造商提供的预期值进行了比较,发现当输入电压更接近期望的输出电压时,转换效率会提高。
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来源期刊
International Journal of Advanced Mechatronic Systems
International Journal of Advanced Mechatronic Systems Engineering-Mechanical Engineering
CiteScore
1.20
自引率
0.00%
发文量
5
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