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Engineering Review : International journal for publishing of original researches from the aspect of structural analysis, materials and new technologies in the field of mechanical engineering, shipbuilding, fundamental engineering sciences, computer sciences, electrical engin, Vol. 44 No. 3, 2024.

Original scientific paper

https://doi.org/10.30765/er.2484

An efficient control for a standalone photovoltaic water pumping system based on a separately excited dc motor drive

Samir Zoughab ; LAS Laboratory, Department of Electrical Engineering, Faculty of Technology, Setif 1 University-Ferhat Abbas, Campus EL Maabouda, 19000 Setif, Algeria *
Nouri Belhaouchet ; LAS Laboratory, Department of Electrical Engineering, Faculty of Technology, Setif 1 University-Ferhat Abbas, Campus EL Maabouda, 19000 Setif, Algeria
Samir Sayah ; QUERE Laboratory, Department of Electrical Engineering, Faculty of Technology, Setif 1 University-Ferhat Abbas, Campus EL Maabouda, 19000 Setif, Algeria

* Corresponding author.

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Abstract

This paper deals with a simple and efficient control for a standalone photovoltaic (PV) water pumping system based on a separately excited DC motor drive. The structure of this system uses two power converters coupled by a DC-bus capacitor. The first is a DC-DC boost converter used to extract the available maximum power of the PV array by using a perturb-and-observe maximum power point tracking (P&O MPPT) technique. The second is a DC-DC buck converter used as an interface to supply the armature circuit of the DC motor with a variable voltage according to the produced PV power. In order to ensure a constant magnetic flux, the field circuit of the DC motor is connected to the DC-bus capacitor and the DC-bus voltage is regulated at a desired level. The main advantage of this structure is that the features of an expensive permanent magnet DC motor can be achieved by using a low cost separately excited DC motor. The usefulness of this system is verified by a digital simulation using Matlab/Simulink and experimentally confirmed by a real-time implementation based on dSPACE 1104 system card. The illustrated results show a good agreement between simulations and experiments for various operating conditions.

Keywords

PV water pumping system; DC-DC boost converter; P&O MPPT; separately excited DC motor; centrifugal pump

Hrčak ID:

322931

URI

https://hrcak.srce.hr/322931

Publication date:

2.12.2024.

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