Investigation of Global MPPT Technique for Sustainable Solar PV Systems Under Partial Shading
DOI:
https://doi.org/10.70917/jcc-2026-024Keywords:
Globalized MPPT 1, DC-DC Converter 2, Partial shading 3, High Gain Converter 4Abstract
The shading effect arises when a photovoltaic system experiences an uneven incident solar irradiance due to obstructions. In such situations, cells receiving lower solar irradiance levels may absorb power instead of generating it. To mitigate this impact and safeguard solar panels, bypass diodes are employed. Partial shading, where only a part is shaded from the Photo Voltaic (PV) module, can have more severe consequences than uniform shading. Shading poses challenges to Maximum Power Point Tracking (MPPT) algorithms. MPPT is designed to make sure the photovoltaic system is operating at its peak power, but shading can make the system converge to a local extreme when compared to the global maximum. To overcome this challenge, a Globalized MPPT algorithm is taken, which comprises three components which are Partial Shaded Detection, searching for Global peak, and an MPPT procedure. Moreover, DC-DC converters are crucial in solar systems to efficiently convert variable DC voltage from solar panels to a stable voltage. Considering this context, a high-gain converter is essential for elevating voltage levels, eliminating the need for a transformer on the AC side. While prior research has explored various derived DC-DC converters to achieve larger gains, this often necessitates an increase in the number of components. To address this challenge, a hybrid high-gain DC-DC converter is used which have fewer components and lower voltage stress.
The operational features are obtained using PSCAD/EMDTC software and analyzed comprehensively. Eventually, to authorize the working of globalized MPPT approach with the High gain converter during different scenarios, the simulation was executed systematically and the performance characteristics are presented.
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Copyright (c) 2026 Y.T.R. PALLESWARI, Asapu Siva, Pothula Jagadeesh, Susitra D, K. P. Swaroop, Lakshman Kumar Dangeti (Author)
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