Photovoltaic Power Generation MATLAB Simulation Model (.mdl File) with P&O MPPT Algorithm

This article presents a MATLAB Simulink simulation model (.mdl file) for photovoltaic power generation systems. The model implements Maximum Power Point Tracking (MPPT) using the Perturb and Observe (P&O) algorithm, which works by periodically perturbing the system operating point and observing the resulting power change to determine the optimal power extraction point. The implementation includes key components such as voltage and current sensors for power calculation, a perturbation generator that adjusts the reference signal, and a decision logic block that compares consecutive power measurements to determine the direction of perturbation. The model demonstrates how the P&O algorithm continuously adjusts the duty cycle of the power converter to maintain operation at the maximum power point under varying environmental conditions. I will provide detailed explanations of the model's working principles, implementation methodology, and share relevant code documentation to facilitate understanding. This resource aims to assist researchers and engineers interested in photovoltaic systems and MATLAB simulation, enabling better comprehension and application of renewable energy technologies. The model includes comprehensive blocks for solar array characteristics, DC-DC converter dynamics, and MPPT controller implementation with adjustable perturbation steps and sampling intervals.