Development and implementation of modified MPPT algorithm for boost converter‐based PV system under input and load deviation

Abstract

This paper presents a modified-maximum power point tracking (M-MPPT)-based application of boost converter to extract the power from photovoltaic (PV) module under the variable solar irradiance and load disturbances. The perturb and observe (P&O)-based MPPT algorithm suffers from an inherent drift in case of an increment in solar irradiance. This drift is observed during the variation in duty cycle under rapid increment in solar irradiance. Modified drift avoidance P&O-based MPPT is developed to reject the drift effect by incorporating the current (dI) variation in the algorithm along with the power (dP) and voltage (dV) variation, respectively. The proposed novel drift avoidance P&O M-MPPT algorithm for boost converter is implemented and compared with the conventional P&O algorithm. The drift free performance is demonstrated for the proposed scheme with adaptive duty cycle (ΔD) technique. The simulation study is carried out in MATLAB/Simulink to predict the performance under variations in solar irradiance and load change. Furthermore, the experimental prototype is used to validate the simulation-based results. The proposed schemes are implemented using the dSPACE 1104. The steady state and transient results are showing the reduction in time to achieve the maximum power by the proposed technique successfully. The real time results are successfully validating the same theoretical findings in this work.