https://scholars.lib.ntu.edu.tw/handle/123456789/438572
Title: | Analysis of the junction temperature and thermal characteristics of photovoltaic modules under various operation conditions | Authors: | Jiang J.-A. Wang J.-C. Kuo K.-C. Su Y.-L. Shieh J.-C. Chou J.-J. JOE-AIR JIANG |
Keywords: | Junction temperature; Maximum power point (MPP); P-n junction semiconductor; Photovoltaic (PV) modules; Solar cells; Solar irradiation | Issue Date: | 2012 | Journal Volume: | 44 | Journal Issue: | 1 | Start page/Pages: | 292-301 | Source: | Energy | Abstract: | The accumulation of thermal energy in the interior of photovoltaic (PV) modules as a consequence of continuous solar irradiation causes a difference between the junction temperature of the PV modules and the ambient temperature, which leads to a serious deterioration in the performance of the PV modules. We investigate this problem in depth, proposing a novel method to directly determine the junction temperature of the PV modules based on the p-n junction semiconductor theory. The proposed method is a new and simple approach with a low calculation burden. Its performance is evaluated by examining the characteristics of the junction temperature of the PV modules given variation in both temperature and irradiation intensity. After obtaining the junction temperature of the PV modules, we can track a more accurate maximum power point (MPP) for the PV modules, which is inherently affected by the ambient temperature, so that the maximum utilization efficiency of PV modules can be further achieved. The experimental results demonstrate that the proposed method is a significant improvement in terms of the precision of the MPP control model, and helps PV modules produce their maximum power under various operation conditions. © 2012 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/438572 | ISSN: | 03605442 | DOI: | 10.1016/j.energy.2012.06.029 | SDG/Keyword: | Solar cells; Solar radiation; Temperature; Junction temperatures; Maximum power point; P-n junction; Photovoltaic modules; Solar irradiation; Semiconductor junctions; irradiation; performance assessment; photovoltaic system; precision; temperature effect; thermal power |
Appears in Collections: | 生物機電工程學系 |
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