Simulation and Performance Evaluation of the Perturb and Observe (P&O) MPPT Algorithm for Photovoltaic Systems under Partial Shading and Varying Irradiance Conditions

Author(s)	Dr. Anantha Lakshmi Vuyyuru, Dr. Rama Mohan Y, Dr. Satheesh G, Dr. Kishor G
Country	India
Abstract	This paper presents a simulation-based study of the Perturb and Observe (P&O) maximum power point tracking (MPPT) algorithm for photovoltaic (PV) energy harvesting systems. A 50 W PV module was modeled in MATLAB/Simulink to evaluate the performance of the P&O algorithm under uniform irradiance, partial shading, and varying irradiance conditions. Simulation results indicate that the P&O algorithm achieves satisfactory performance under uniform irradiance, with an efficiency of approximately 88%. However, under partial shading conditions, the algorithm is unable to track the global maximum power point (GMPP), resulting in reduced power extraction and overall system performance.
Keywords	Perturb and observe, maximum power point , Partial Shading Conditions
Field	Engineering
Published In	Volume 7, Issue 4, July-August 2026
Published On	2026-08-05

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