Novel hot spot mitigation technique to enhance photovoltaic solar panels output power performance
Novel hot spot mitigation technique to enhance photovoltaic solar panels output power performance
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DOI：
10.1016/j.solmat.2018.02.019
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发表时间：
2018-06-01
影响因子：
6.9
通讯作者：
Sibley, Martin
中科院分区：
文献类型：
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作者：
Dhimish, Mahmoud;Holmes, Violeta;Sibley, Martin
在光伏电池板中，热斑是一个可靠性问题，不匹配的电池会显著升温，并降低光伏电池板的输出功率性能。由于热斑导致的高光伏电池温度可能会损坏电池封装并导致二次击穿，这两种情况都会对光伏面板造成永久性损坏。为此，提出了利用一种简单、低成本、可靠的热点激活技术来设计和开发一种热点缓解技术。在不同的环境条件下进行了多项实验研究，在每次观察到的测试中评估了光伏组件的P-V曲线，以分析所提出的热点缓解技术激活前后的输出功率性能。对一个受热点影响的光伏组件进行了测试。激活热斑缓解技术后，输出功率增加了约3.6W。在将热点光伏组件与另外两个光伏电池板串联时进行了额外的测试。结果表明，激活热点缓解技术后，输出功率增加了3.57W。
Hot spotting is a reliability problem in photovoltaic (PV) panels where a mismatched cell heats up significtly and degrades PV panel output power performance. High PV cell temperature due to hot spotting can damage the cell encapsulate and lead to second breakdown, where both cause permanent damage to the PV panel. Therefore, the design and development of a hot spot mitigation technique is proposed using a simple, low-cost and reliable hot spot activation technique. The hot spots in the examined PV system is detected using FUR i5 thermal imaging camera.Several experiments have been studied during various environmental conditions, where the PV module P-V curve was evaluated in each observed test to analyze the output power performance before and after the activation of the proposed hot spot mitigation technique. One PV module affected by hot spot was tested. The output power increased by approximate to 3.6 W after the activation of the hot spot mitigation technique. Additional test has been carried out while connecting the hot spot PV module in series with two other PV panels. The results indicate that there is an increase of 3.57 W in the output power after activating the hot spot mitigation technique.