A Novel Globalized MPPT Approach for Large Scale Solar PV System under Partial Shading Conditions

Y T R Palleswari, Vanitha Rajendran

Abstract


In large scale solar PV system, multiple units are solar PV panel are connected to generate the energy. Due to non-linearity of the performance characteristics of solar PV, it is a complex task to perform the system under varying environmental conditions. Especially, under partial shading conditions, the solar PV array operates as reverse PN junction diode and generates lesser energy. During these conditions, it behaves as a load and internal hotspots created, which drastically reduces the open circuit voltage. The traditional MPPT algorithm gets fail to extract the maximum power during partially shaded conditions. In order to overcome this particular limitation, this paper proposes a novel globalized MPPT approach to achieve MPPT operation under sudden varying environmental condition with inclusion of partially shaded conditions. The mathematical modeling of solar PV and performance characteristics have been modeled in PSCAD/EMDTC software and investigated in detail. Finally, to validate the proposed globalized MPPT approach, the simulation study was carried out and results have been discussed in this paper.


Keywords


Energy; Renewable Energy;Solar Energy;electrical engineering

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DOI (PDF): https://doi.org/10.20508/ijrer.v12i1.12534.g8417

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