Improving energy efficiency and economics of motor-pump-system using electric variable-speed drives for automatic transition of working points

Ahmed, Abdelsalam A.; Moharam, Basma A.; Rashad, Essam M.

doi:10.1016/j.compeleceng.2021.107607

Cited by 13 publications

(6 citation statements)

References 13 publications

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“…When the voltage decreases, the current first begins to decrease, and then increases sharply. From this we can conclude that in order to reduce power consumption, we need to look for exactly this minimum current, in accordance with the objective function (2).…”

Section: Discussionmentioning

confidence: 99%

“…When using an unregulated electric drive in power supply systems, there is an overexpenditure of electricity, which also affects the service life of pumps. The use of frequency converters in conjunction with an asynchronous electric drive in power supply systems leads to energy savings of up to 80%, while increasing the service life of electrical equipment [2].…”

Section: Introductionmentioning

confidence: 99%

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Energy saving in water supply systems of livestock complexes using an adjustable asynchronous electric drive

Kaun

Yurov

Antonov

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This article presents an energy-saving electric drive of a direct-flow water supply system. The analysis of various water supply systems for animal watering is given. An experimental installation of an adjustable electric drive of an asynchronous electric drive is presented, which allows selecting parameters for a frequency converter for the technological process and reducing the consumption of electrical energy by up to 10%. The hypothesis of reducing the energy consumption of the pumping unit when regulating the voltage and frequency of the supply network is confirmed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy saving in water supply systems of livestock complexes using an adjustable asynchronous electric drive

Kaun

Yurov

Antonov

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Designing these devices presents significant engineering challenges due to the constraints on catheter sizes. One of the main challenges associated with miniature MCS devices is the need for increased angular speed to meet the high demands for sufficient flow and pressure [ 7 , 8 , 9 ]. Despite their hemodynamic effectiveness [ 1 ], the clinical use of MCS is accompanied by several major complications and long-term side effects.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Mechanical Circulatory Support on Blood Flow in the Ascending Aorta: A Combined Experimental and Computational Study

Hazan Shenberger,

Avrahami

2024

Bioengineering

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Percutaneous mechanical circulatory support (MCS) devices are designed for short-term treatment in cases of acute decompensated heart failure as a bridge to transplant or recovery. Some of the known complications of MCS treatments are related to their hemodynamics in the aorta. The current study investigates the effect of MCS on the aortic flow. The study uses combined experimental and numerical methods to delineate complex flow structures. Particle image velocimetry (PIV) is used to capture the vortical and turbulent flow characteristics in a glass model of the human aorta. Computational fluid dynamics (CFD) analyses are used to complete the 3D flow in the aorta. Three specific MCS configurations are examined: a suction pump with a counterclockwise (CCW) rotating impeller, a suction pump with a clockwise (CW) rotating impeller, and a discharge pump with a straight jet. These models were examined under varying flow rates (1–2.5 L/min). The results show that the pump configuration strongly influences the flow in the thoracic aorta. The rotating impeller of the suction pump induces a dominant swirling flow in the aorta. The swirling flow distributes the incoming jet and reduces the turbulent intensity near the aortic valve and in the aorta. In addition, at high flow rates, the local vortices formed near the pump are washed downstream toward the aortic arch. Specifically, an MCS device with a CCW rotating impeller induces a non-physiological CCW helical flow in the descending aorta (which is opposite to the natural helical flow), while CW swirl combines better with the natural helical flow.

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“…In practice, however, most centrifugal pumps are not operating at * Author to whom any correspondence should be addressed. optimal state, and therefore result in energy consumption accounting for 16% of global energy consumption [4]. The traditional approach of adjusting the outlet valve opening to regulate the operating state of the pump can lead to significant electrical consumption and even diminish the performance of pumps.…”

Section: Introductionmentioning

confidence: 99%

Prediction of centrifugal pump performance parameters based on a multilayer hybrid model

Chai

Zhang

Xia

et al. 2023

Meas. Sci. Technol.

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The present paper presents a multilayer hybrid model for sensorless measurement of pump operating status, with the objective of enabling safe and stable operations while reducing energy losses. The model takes easily measurable variables such as rotational frequency and valve opening as input features to predict the performance parameters of the centrifugal pump. By integrating Just-in-time learning (JITL) with Gaussian process regression (GPR) and leveraging the unique probability features of GPR, a JGPR is developed to extract valuable feature information. The JGPR sequentially predicts the flow rate, coefficient for dynamic head, and shaft power. The predicted values are extended to other input features, which can accurately capture the characteristics of the centrifugal pump and effectively replace the process of acquiring process parameters through sensors. Finally, the mechanism model is integrated into the multilayer JGPR model to calculate the performance parameters of centrifugal pump. The validation results indicate a strong agreement between predicted and experimental results, with predicted meeting performance parameters all engineering requirements. Compared to a single model, the multilayer hybrid model significantly improves the reliability of predictions, demonstrating the feasibility of using this approach to predict performance parameters. This research provides valuable insights into the measurement of sensorless pump operating states, enabling safe and efficient operation in complex conditions.

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Improving energy efficiency and economics of motor-pump-system using electric variable-speed drives for automatic transition of working points

Cited by 13 publications

References 13 publications

Energy saving in water supply systems of livestock complexes using an adjustable asynchronous electric drive

Energy saving in water supply systems of livestock complexes using an adjustable asynchronous electric drive

The Effect of Mechanical Circulatory Support on Blood Flow in the Ascending Aorta: A Combined Experimental and Computational Study

Prediction of centrifugal pump performance parameters based on a multilayer hybrid model

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