Solar Water Pumping System Modelling and Analysis using MATLAB/Simulink

Solar photovoltaic (PV) based water pumping systems provide an appropriate substitute to the traditional water pumps based on electricity and diesel because of low cost and eco-friendly nature. These systems are very suitable for remote locations with no access to electricity grid. The output of solar PV systems varies with varying external conditions like solar irradiance and temperature. In this work, a MATLAB/ Simulink based study of solar powered water pumping system with permanent magnet DC motor driving a centrifugal pump has been done. Perturb and observe (P&O) maximum power point tracking algorithm has been implemented to regulate duty cycle of a DC-DC boost converter. The Simulink model has been tested for three condition (i.e. under standard test condition (STC), varying solar irradiance and partial shading condition).