Water-energy nexus: A dynamic study of multi-pumps water station powered by grid-connected PV generator

Abstract

This paper aims to investigate a full value energy chain using a grid-connected PV (GCPV) generator and a full value water chain meaning by three pumping units, the basic substructures of water-energy nexus. A dynamic study is exploited to elucidate the different operating modes that can be encountered and more enlighten the interdependence in water and energy by exploiting the sustainability in energy-providing to save water. In the side of the GCPV generator, Voltage Oriented Control (VOC) strategy is used to maintain the stability of the voltage DC bus and control the reactive power between the grid and the PV array. The water system is composed of three identical pumping units which make them useful whatever the irradiance. Here, Power-Field Oriented Control (P-FOC) is used in each pumping unit in order to control the absorbed power and the magnetic state of the induction motor coupled to the used centrifugal pump. On that account, by amending the intermittence of the solar irradiance and the needed water volume, the water-energy nexus concept is being more substantial and makes more practically the used system in rural areas and agriculture zones, which in turn represents the most belief ideology in the developed policies.