Simulation and analysis of electrical water pumping system using solar energy

Abstract

This paper presents the modeling and simulation of electrical water pumping system using solar energy. Now-a-days PV array is increasingly employed for water pumping system. In this paper, the developed boost converter steps up the voltage produced by the PV array to a value which is suitable to run a single-phase induction motor. The inverter converts DC to AC is controlled by using sinusoidal pulse width modulation (SPWM) technique. By using a LC filter the harmonics are eliminated and pure sine wave is obtained which can be directly used to drive a single-phase induction motor and pump system. The Experimental investigation presented gives the utility of such a drive system. A design of directly coupled solar water pumping system powered from photovoltaic panels, DC to DC Boost converter, full bridge sinusoidal pulse width modulation (SPWM) inverter, LC filter, induction motor and centrifugal pump is presented. The PID feedback controller is used to control the voltage. The model was implemented using MATLABI Simulink with SPWM controlled inverter model.