Milestone of the most used maximum power point tracking in solar harvesting system

Solar harvesting system with photovoltaic (PV) is one of the most desirable renewable energy sources because its prominent advantages. However, low efficiency due to fluctuating output power a major problem for PV systems. A technique used maximize extraction known as maximum point tracking (MPPT) has been proposed by various literature deal this problem. One widely developed MPPT methods ease implementation perturb and observe (P&O). Since initial discovery principle, P&O method extensively modified including fixed step-size: step-size variables, partial shading, threshold module current, three-point-comparison, maximization dynamic performance, minimization bandwidth