基于微热管的局部阴影下光伏-热电耦合系统的性能分析  

Performance analysis of the photovoltaic thermoelectric coupling system under local shadow based on micro heat pipe

作　　者：王立舒[1] 卞小濛 张凯铭 贾舒涵 罗煦川 白龙 Wang Lishu;Bian Xiaomeng;Zhang Kaiming;Jia Shuhan;Luo Xuchuan;Bai Long(Institute of Electrical and Information,Northeast Agricultural University,Harbin 150030,China)

机构地区：[1]东北农业大学电气与信息学院,哈尔滨150030

出　　处：《农业工程学报》2022年第6期244-253,共10页Transactions of the Chinese Society of Agricultural Engineering

基　　金：黑龙江省教育厅科技课题(12521038);黑龙江省教育厅基本科研业务费支持项目(1353MSYYB015);牡丹江师范学院青年学术骨干项目(GG2018004)。

摘　　要：光伏-热电耦合系统由于光伏电池受到局部阴影遮挡的影响,导致光伏电池温度不均衡以及热电受热不均匀,降低了光热联合发电系统的输出功率。该研究以微热管作为导热元件并设置温度控制装置,制成光热联合发电组件,解决由于阴影遮挡光伏电池而引起的光伏电池温度不均匀以及热电系统受热不均匀的问题,提高联合发电系统的输出功率。试验表明:当阴影遮挡光伏板的面积为光伏板总面积的10%,热端口热量流速为0.0124 m/s,冷端的水流速为0.0135 m/s时,光伏电池阴影区与非阴影区的平均温度差约为274.15 K,光伏输出的平均功率提高18.79%,热电输出的平均功率提高1.92%,为光热联合发电系统的进一步研究提供参考依据。Energy power generation has been widely used in the field of renewable energy.Only a small part of the energy can be converted into electrical energy during photovoltaic power generation,most of which is lost in the form of thermal for the great wastes.A photovoltaic and thermoelectric sysplex can be expected to combine the thermopiles using waste heat on the surface of photovoltaic cells,in order to improve the output power of power generation.However,there is uneven heat absorption of thermopiles in the process of heating.The local shadow shading on the photovoltaic cells can cause the unstable output characteristics of temperature difference,leading to the less output power of the combined power generation system.The micro heatpipe can be equipped as the heat conduction element in the temperature control device for the even heating of the thermoelectric system in the photo-thermal combined power generation module.In this study,the simulation model and test platform were built to evaluate the performance of the micro heat-pipe element,in terms of the heat transfer and output power.A chaotic quantum behavior particle swarm optimization with the linear decreasing type,and the incremental conductance of variable step-size were used as the control strategies of photovoltaic and thermoelectric systems,respectively.Ten photovoltaic cells were connected in series in MATLAB software,in order to clarify the influence of different shading areas on the output power.The different light intensities were also set to simulate the shading of shadows.The temperature was selected as the evaluation index of the heat transfer during the light-heat conversion in the whole system.The photovoltaic cell with the power of 25 W and the thermopiles with the model of sp1848-27145 were adopted as the power generation elements of the coupling system for the test platform.The number of temperature difference plates was set as 90,according to the size of a 25 W photovoltaic cell.Every 10 plates was connected in series as a group,and then the

关 键 词：光伏 温度 微热管 局部阴影 温度不均衡 温度控制装置 

分 类 号：TM913[电气工程—电力电子与电力传动]