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| Numerical analysis of temperature difference performance of photothermal coupled power generation system under partial shadow |
| ZHANG Weihua1, YANG Yifan2, ZHAO Bingbing3, ZHEN Jinglong4, KANG Di5 |
1. Guangxi Science & Technology Normal University, Laibin, Guangxi 546199;
2. Aerospace Architecture Design and Research Institute Co., Ltd, Beijing 100012;
3. Baoji Oilfield Machinery Co., Ltd, Baoji, Shannxi 721000;
4. Shenzhen Hopewind Electric Co., Ltd, Shenzhen, Guangdong 518055;
5. Bomay Electric Industries Co., Ltd, Xi'an 710077 |
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Abstract In view of the uneven temperature caused by the shadow blocking the photovoltaic cell, the thermoelectric system in the photothermal coupling system has the problems of temperature imbalance and stress expansion of the thermoelectric device during the heat absorption process. In this paper, the finite element analysis method is used to analyze the performance of the 120-pair P-N junction temperature difference device on the back of the photovoltaic when the area of the shadow-shaded photovoltaic cell is 0.02m2, 0.12m2 and 0.22m2, respectively. The experimental results show that the internal resistance of the thermoelectric device is not affected by the area and temperature difference of the shaded photovoltaic cell, the open circuit voltage increases approximately linearly with the increase of the area of the shaded photovoltaic cell and the increase of the temperature difference, and the output power increases with the temperature difference. When the area of the photovoltaic cell is increased, the light-to-heat conversion efficiency decreases.
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Received: 07 October 2021
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[1] 王军, 张超震, 董彦, 等. 温差发电模型的热电性能数值计算和分析[J]. 太阳能学报, 2019, 40(1): 44-50.
[2] 刘强, 陈燕, 杜谦, 等. 基于碟式聚光器的温差发电性能仿真研究[J]. 电源技术, 2021, 45(7): 928-931.
[3] 王立舒, 冯广焕, 张旭, 等. 聚光太阳能光伏/温差热复合发电系统设计与性能测试[J]. 农业工程学报, 2018, 34(15): 246-254.
[4] 赖林琛, 周强, 杜文娟, 等. 同型光热发电机并联聚合对光热发电场振荡稳定性影响[J]. 电工技术学报, 2022, 37(1): 179-191, 231.
[5] 车泉辉, 娄素华, 吴耀武, 等. 计及条件风险价值的含储热光热电站与风电电力系统经济调度[J]. 电工技术学报, 2019, 34(10): 2047-2055.
[6] 黄种明, 许志龙, 李煌. 光伏光热一体机的双光电跟踪太阳控制器研制[J]. 农业工程学报, 2021, 37(8): 236-241.
[7] 王立舒, 文竞晨, 王锦锋, 等. 基于微热管阵列的太阳能温差发电系统优化[J]. 农业工程学报, 2019, 35(22): 251-256.
[8] 何雅玲, 王坤, 杜保存, 等. 聚光型太阳能热发电系统非均匀辐射能流特性及解决方法的研究进展[J].科学通报, 2016, 61(30): 3208-3237.
[9] 王刚, 陈则韶, 胡芃, 等. 均匀聚光条件下聚光倍数与太阳电池输出功率关系研究[J]. 太阳能学报, 2013, 34(4): 659-663.
[10] ADMASU B T, LUO Xiaobing, YAO Jiawei.Effects oftemperature non-uniformity over the heat spreader on theoutputs of thermoelectric power generation system[J]. Energy Conversion and Management, 2013, 76: 533-540.
[11] 吴馥郁, 胡骛渊, 胡申华, 等. 基于实验分析的热电发电改进MPPT算法研究[J]. 电气传动, 2020, 50(10): 79-84.
[12] MONTECUCCO A, SIVITER J, KNOX A R.Con- stantheat characterisation and geometrical optimisation ofthermoelectric generators[J]. Applied Energy, 2015, 149: 248-258.
[13] 王林成, 全贞花, 赵耀华, 等. 微热管阵列光伏光热组件瞬时效率实验研究[J]. 太阳能学报, 2015, 36(3): 539-545.
[14] 沈志华. 塔式光热电站定日镜清洗技术研究[J]. 电气技术, 2021, 22(6): 119-123.
[15] 毛维宙, 陆华军, 单宝奇. 塔式光热电站储热系统容量优化配置[J]. 电气技术, 2018, 19(11): 37-42, 54.
[16] MOLINA M G, JUANICO L E, RINALDE G F, et al.Design of improved controller for thermoelectric generator used indistributed generation[J]. Inter- national Journal of Hydrogen Energy, 2010, 35(11): 5968-5973.
[17] WU Guangxi, YU Xiong.A holistic 3D finite elementsimulation model for thermoelectric power generatorelement[J]. Energy Conversion and Manage- ment, 2014, 86: 99-110. |
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2022, Vol. 23 
