PV Pumping System with Battery Storage for Sustainable Irrigation

Abstract

The present study investigates a hybrid photovoltaic (PV) lithium-ion battery for the purpose of powering a water pumping mechanism, focusing on detailed modelling, control strategies, and performance evaluation for sustainable irrigation. The system incorporates an induction motor pump, a three-phase inverter, a bidirectional converter, a DC/DC boost converter, and a solar array. In order to maximise the amount of solar energy extracted, an Incremental Conductance (INC) Maximum Power Point (MPPT) method is applied, whilst PI controllers are employed to regulate the DC bus voltage and the battery current. Direct Torque Control (DTC) is implemented to ensure a fast and robust motor response. The complete system has been modelled in MATLAB/Simulink and tested under conditions of variable irradiance and temperature. The simulation results demonstrate effective MPPT tracking, balanced power sharing between the photovoltaic (PV) and battery systems, and reliable water pumping with smooth torque and speed dynamics. The findings of the present inquiry lend substantiation to the efficacy of the proposed method in delivering a unsoiled, autonomous and dependable agricultural irrigation resolution.