基于改进热网络和参数辨识的热电模块温差估计方法

祖玮; 应展烽; 杨毅

doi:10.19912/j.0254-0096.tynxb.2025-0500

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (8) : 350-358. DOI: 10.19912/j.0254-0096.tynxb.2025-0500

基于改进热网络和参数辨识的热电模块温差估计方法

祖玮¹, 应展烽², 杨毅²

作者信息 +

TEMPERATURE DIFFERENCE ESTIMATION METHOD FOR THERMOELECTRIC MODULES BASED ON IMPROVED THERMAL NETWORK AND PARAMETER IDENTIFICATION

Zu Wei¹, Ying Zhangfen², Yang Yi²

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文章历史 +

摘要

基于改进等效热网络和多目标参数辨识,提出一种TEG模块冷热端温差估计方法。该方法首先对传统等效热网络进行改进,使其能描述环境热对流与热辐射对模块散热的非线性影响;然后以热端、冷端和散热器温度估计误差最小为多目标函数,结合凸函数特性分析和非支配排序遗传算法Ⅱ,对模块热参数进行辨识;最后根据辨识参数与改进等效热网络实现冷热端温差快速估计。在散热功率非线性变化最为明显的自然对流条件下对所提方法进行实验验证,结果表明该方法可高精度提取难以理论计算的TEG模块热参数,准确估计自然对流条件下的模块冷热端温差动态变化。

Abstract

In the paper, based on an improved equivalent thermal network and multi-objective parameter identification, a method for estimating the temperature difference of TEG modules is proposed. This method firstly improves the traditional equivalent thermal network to describe the nonlinear influence of environmental thermal convection and heatsink on module heat dissipation. Then, using the minimum estimation errors of the hot side, cold side, and heatsink temperatures as multi-objective functions, the thermal parameters of the module are identified by combining the convex function characteristic analysis and the non-dominated sorting genetic algorithm II. Finally, the temperature difference between the hot and cold sides is quickly estimated based on the identified parameters and the improved equivalent thermal network. The proposed method is experimentally validated under natural convection conditions where the change in heat dissipation power is most pronounced nonlinearly. The results show that this method can extract TEG module thermal parameters that are difficult to calculate theoretically with high precision and accurately estimate the dynamic changes in the temperature difference between the module's hot and cold sides under natural convection conditions.

导出引用

祖玮, 应展烽, 杨毅. 基于改进热网络和参数辨识的热电模块温差估计方法[J]. 太阳能学报. 2026, 47(8): 350-358 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0500

Zu Wei, Ying Zhangfen, Yang Yi. TEMPERATURE DIFFERENCE ESTIMATION METHOD FOR THERMOELECTRIC MODULES BASED ON IMPROVED THERMAL NETWORK AND PARAMETER IDENTIFICATION[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 350-358 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0500

中图分类号： TK123

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