Performance Loss in Solar Photovoltaic Array due to Non-ideal Natural Conditions
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Abstract
Performance of a SPV system is dependent on temperature, array configuration, solar insolation, and shading across it. Shading can occur when the PV arrays/modules get covered by shadows of passing clouds, buildings, etc., or even by shadows cast by other modules/arrays. As a result the ideal operation of the PV systems is severely affected the P-V and I-V characteristics. The modeling of nonlinear current-voltage characteristics of solar cells for performance prediction becomes difficult under the influence of shading. Non-uniform solar radiation due to shadows casted by the other panels/ modules, buildings, clouds, etc. can cause maximum power to change drastically. Partial shading of PV installations has an impact on its power production. For the simulated results it has been observed that 74.66% loss in I-V characteristics and 85.41% loss in P-V characteristics respectively. The power losses in the individual shaded cells would result in local heating and create thermal stress on the entire module/array resulting in hot-spot formation.
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How to Cite
Sudhakar, H. S., Balaraju, G. B., Pradeep, K., & Siddhartha Bhatt, M. (2014). Performance Loss in Solar Photovoltaic Array due to Non-ideal Natural Conditions. Power Research - A Journal of CPRI, 131–136. Retrieved from https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/845
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