Design and Optimal Choice of a Photovoltaic Pumping System for Irrigation Purposes

The global demand energy growth and the exhaustion of oil fields and conventional gases have promoted research in the field of renewable energies. Among these sources of energy, the solar is the most important renewable energy source in Morocco. The present project deals with a method of designing a photovoltaic solar pumping system. The aim of this design is to make an optimal choice of the various industrial equipment of this system as well as the choice of the appropriate numerical methods ensuring optimization, regulation and safety. This sizing method is based on the mathematical equations that govern the system as well as the charts of electrical and mechanical quantities. The system in question is composed of three equipments namely: The PV generator, the drive and the motor pump. This design not only makes it possible to design the pumping system to meet the desired technical specifications, but also to ensure compatibility to ensure proper operation and reliability. It is based essentially on the assessment of the water requirements, the calculation of the necessary hydraulic energy, the calculation of the necessary electrical energy that is provided by the PV generator and the optimization of the constituents of the system. In this design, the estimated flow is 3 m3 / h for a total dynamic head (TDH) of 75 m. The design and choice of the industrial equipment are made on a real installation to meet the water needs of the gardens of the Faculty of Science and Techniques of Beni-Mellal.