Improving Reliability and Energy Efficiency of Three Parallel Pumps by Selecting Trade-Off Operating Points

Safarbek Oshurbekov, Vadim Kazakbaev, Vladimir Prakht and Vladimir Dmitrievskii
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Safarbek Oshurbekov: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia
Vadim Kazakbaev: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia
Vladimir Prakht: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia
Vladimir Dmitrievskii: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia

Mathematics, 2021, vol. 9, issue 11, 1-19

Abstract: Reliability, along with energy efficiency, is an important characteristic of pump units in various applications. In practical pump applications, it is important to strike a balance between reliability and energy efficiency. These indicators strongly depend on the applied control method of the pump unit. This study analyzes a trade-off method for regulating a system with three parallel pumps equipped with only one frequency converter (multi-pump single-drive system). A typical operating cycle of a pumping system with variable flow rate requirements is considered. The proposed trade-off method is compared with the traditional regulation, when a change in the operating point of the pump is achieved only by changing the rotation speed, and with the method for maximum reliability. It is shown that the proposed trade-off method makes it possible to ensure sufficient reliability of the multi-pump system operation without a significant increase in energy consumption.

Keywords: centrifugal pump; energy efficiency; induction motor; parallel pumps; throttling; variable speed pump (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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