EN光伏热电耦合系统多目标优化研究
光伏热电耦合系统多目标优化研究
- 太阳能学报 2025年第10期 页码：276-284
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DOI：doi:10.19912/j.0254-0096.tynxb.2024-1092
中图分类号： K519-
网络出版：2025-10-31，
纸质出版：2025-10-31
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杨启秀, 张晨宇, 徐洪涛. 光伏热电耦合系统多目标优化研究[J]. 太阳能学报, 2025,(10):276-284.
杨启秀, 张晨宇, 徐洪涛. 光伏热电耦合系统多目标优化研究[J]. 2025, (10): 276-284.
杨启秀, 张晨宇, 徐洪涛. 光伏热电耦合系统多目标优化研究[J]. 太阳能学报, 2025,(10):276-284. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1092.
杨启秀, 张晨宇, 徐洪涛. 光伏热电耦合系统多目标优化研究[J]. 2025, (10): 276-284. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1092.
摘要
基于热阻理论建立光伏-热电耦合系统的数学模型
采用改进的多目标粒子群优化算法（MOPSO）
以最大效率和输出功率为优化目标
同时选取热电元件冷热侧截面积、热电元件高度、负载电阻及聚光比作为设计变量
并讨论纳米流体不同流速对优化结果的影响。结果表明：最高效率与最大输出功率相互制约且呈非线性关系;优化后的耦合系统性能显著优于单一光伏系统
耦合系统效率和输出功率相比于单一光伏系统最大提升22.44%和12.33%
且增大纳米流体流速对系统性能的影响并非一直有利;热电结构对耦合系统性能有显著影响
约1.073左右高度的热电元件与本系统更匹配
非等截面热电元件系统性能显著优于等截面
且最大效率出现在S为2.27时;采用TOPSIS可有效平衡耦合系统效率与输出功率
与效率最大化方案相比
最佳折中方案输出功率提高283.01%
效率仅降低14.36%。
Abstract
A mathematical model of the PV-thermoelectric coupling system is established based on thermal resistance theory. The improved multi-objective particle swarm optimization （MOPSO） algorithm is adopted
with maximum efficiency and output power as the optimization objectives. Simultaneously
the design variables include the cross-sectional area of the hot and cold sides of the thermoelectric element
the height of the thermoelectric element
the load resistance
and the concentrator ratio. The effects of different flow rates of nanofluids on the optimization results are also discussed. The results indicate that maximum efficiency and output power constrain each other and exhibit a non-linear relationship. Furthermore
the optimized performance of the coupled system surpasses that of a single photovoltaic system significantly
with efficiency and output power being maximally improved by 22.44% and 12.33% respectively compared to a single photovoltaic system. Moreover
the impact of increasing the nanofluid flow rate on system performance is not consistently beneficial. The coupled system performance is significantly influenced by the thermoelectric structure. An element height of approximately 1.073 mm is more compatible with this system. The system performance of non-equal cross-section thermoelectric elements is significantly better than that of equal cross-section elements. Maximum efficiency is achieved when S equals 2.27. TOPSIS effectively balances the efficiency and output power of the coupled system. The output power of the optimal compromise scheme increases by 283.01% compared to the efficiency maximization scheme
with only a 14.36% reduction in efficiency.
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references
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