The energy yield of the photovoltaic (PV) system is reduced to a greater extent under shaded conditions. Reconfiguration and repositioning techniques demand more number of sensors, switches, and an efficient control algorithm and are well suited for rapidly changing shade conditions. However, for fixed shading that is common in urban rooftop installations, where the shading is partial and usually caused by nearby structures, a simple, yet effective technique is necessary. This paper addresses the issue by grouping the panels based on shade intensity and the merits of asymmetrical multilevel inverter (AMLI) are utilized as the working voltage of each group is different.
Performance Enhancement of Partially Shaded Solar Photovoltaic Array Using Grouping Technique
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received July 19, 2014; final manuscript received December 29, 2014; published online January 27, 2015. Assoc. Editor: Santiago Silvestre.
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Malathy, S., and Ramaprabha, R. (June 1, 2015). "Performance Enhancement of Partially Shaded Solar Photovoltaic Array Using Grouping Technique." ASME. J. Sol. Energy Eng. June 2015; 137(3): 034505. https://doi.org/10.1115/1.4029540
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