基于ANSYS的温差发电器性能

发布时间：2018-05-18 02:41

本文选题：热电耦合 + 稳态特性　；参考：《电工技术学报》2014年07期

【摘要】：温差发电器用作高压电气设备的电源,能够有效解决检测装置的信号和电源隔离问题,并使设备余热得到利用。为了提高温差发电器的性能,本论文研究了影响温差发电器性能的各种因素,并在ANSYS上建立了由单PN结组成的热电单偶的三维模型。分别在稳态和瞬态条件下,研究了几种不同的绝缘填充物和散热片翅片高度对热电单偶的冷热两端温差和输出电压的影响。结果表明,随着冷端散热片翅片高度的增高,稳态时冷热两端温差和输出电压增大到逐渐趋于稳定;随着PN结的缝隙之间所添加的绝缘填充物的热导率的增大,稳态时冷热两端的温差和输出电压减小到逐渐趋于稳定。通过实验结果对比分析,仿真结果得到了进一步验证。
[Abstract]:The thermoelectric generator is used as the power source of high voltage electrical equipment, which can effectively solve the problem of signal and power isolation of the detection device, and make use of the residual heat of the equipment. In order to improve the performance of thermoelectric generator, various factors affecting the performance of thermoelectric generator are studied in this paper, and a three-dimensional model of thermoelectric single pair composed of single PN junction is established on ANSYS. The effects of different insulating fillers and fin heights on the temperature difference between the two ends of the thermoelectric pair and the output voltage were studied under steady and transient conditions respectively. The results show that with the increase of the fin height at the cold end, the temperature difference between the two ends of the cold and hot ends and the output voltage increase to a steady state, and with the increase of the thermal conductivity of the insulating filler added between the gaps in the PN junction, the temperature difference between the two ends of the cold end and the output voltage increase gradually. In steady state, the temperature difference and output voltage decrease to a steady state. By comparing and analyzing the experimental results, the simulation results are further verified.
【作者单位】：中国科学院电工研究所应用超导重点实验室;中国科学院大学;
【基金】：国家自然科学基金(51177161,51277172) 中国电机工程学会电力青年科技创新资助项目
【分类号】：TM913

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