This project presents the design and simulation of an intelligent grid interfaced solar photovoltaic (PV) based water pumping system aimed at improving energy efficiency, reliability, and power quality. The proposed system integrates a solar PV array with the utility grid through power electronic converters to ensure continuous operation of a motor-pump under varying environmental conditions. An Incremental Conductance (INC) based Maximum Power Point Tracking (MPPT) algorithm is implemented to extract maximum available power from the PV array, thereby enhancing system efficiency. To address power quality issues, a Power Factor Correction (PFC) stage is incorporated on the grid side to maintain near-unity power factor and reduce harmonic distortion. The system operates in three modes—solar mode, grid mode, and hybrid mode—based on the availability of solar energy, ensuring uninterrupted water pumping without the need for battery storage. A smart power-sharing strategy prioritizes solar energy utilization while supplementing with grid power when necessary. The entire system is modeled and validated using MATLAB/Simulink, demonstrating stable DC-link voltage regulation, efficient energy conversion, and reliable motor operation. The proposed solution effectively reduces dependency on conventional energy sources, minimizes operational costs, and enhances system performance, making it suitable for agricultural and rural water pumping applications.
