Modelling and Simulation of a Photovoltaic Pumping System Using an Asynchronous Motor Controlled by the PWM Technique

Abstract

Today, the exploitation of photovoltaic energy offers an inexhaustible supply of energy but above all clean and non-polluting energy, and due to the increase in electricity costs, photovoltaic solar pumping systems have become a good solution, especially in rural areas, which is a definite advantage. These have had a large share in photovoltaic energy application projects and they belong today to the most significant applications of photovoltaic energy. This work presents an autonomous photovoltaic water pumping system driven by an asynchronous motor.

First, a modelling of all the components of the pumping system chain is made, second, and to improve the performance of the system, we detail the technique disturb and observe (P&O) which makes it possible to understand how we can achieve a system with less oscillations and greater efficiency when monitoring the maximum power point of the PV panel for variations metrology and the use of the MPPT technique.

Then, the converter is combined with a voltage source inverter to convert direct current to alternating current to power the asynchronous motor, to operate the centrifugal pump. Finally, a simulation of the assembly is made using the MATLAB Simulink platform and the set of results are of great importance for the management of this type of installation.