Abstract
The study was carried out to analyse ways to improve the efficiency of the electric drive of a centrifugal pumping unit and to determine the optimal approaches to its energy-efficient operation. Efficiency analysis, experimental studies and theoretical models were employed to assess the impact of technologies on the energy consumption of pumping units. The study determined that the use of frequency control can significantly reduce energy consumption during the operation of a centrifugal pumping unit, especially under variable load conditions. The highest efficiency is achieved when the pump operates at optimum speeds, which can be achieved using variable frequency drives (VFDs). The study also determined that the correct selection of the pump impeller and its maintenance is essential to reduce energy losses. Losses in mechanical connections can be minimised by using high-quality components and regular maintenance of the equipment. The study confirmed that automated control systems significantly improve the efficiency of pump operation, ensuring timely correction of operating parameters following the operating conditions. The conclusion demonstrated the need to implement a comprehensive approach to optimise the energy consumption of pumping units. The study determined that reducing mechanical losses in drives and pumping units using modern technologies significantly increases system efficiency. The introduction of integrated monitoring systems to control pump operation can significantly reduce downtime and improve overall equipment reliability. Notably, the modernisation of electric drives has a positive impact on the energy efficiency of pumping systems through the introduction of innovative materials and design solutions. The study determined that the introduction of new models of electric motors with improved performance contributes to more rational use of energy. In addition, the study proved that regular diagnostics and preventive maintenance of equipment contribute to the stable operation of pumping units, reducing the likelihood of emergency stops and unforeseen repairs