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Volume 13
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10.3390/en13143546
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Article

Life Cycle Energy Cost Assessment for Pump Units with Various Types of Line-Start Operating Motors Including Cable Losses

by
Vadim Kazakbaev
1,
Vladimir Prakht
1,*,
Vladimir Dmitrievskii
1,
Safarbek Oshurbekov
1 and
Dmitry Golovanov
2
1
Department of Electrical Engineering and Electric Technology Systems, Ural Federal University, Ekaterinburg 620002, Russia
2
Department of Electrical Engineering, University of Nottingham, Nottingham NG7 2RD, UK
*
Author to whom correspondence should be addressed.
Energies 2020, 13(14), 3546; https://doi.org/10.3390/en13143546
Submission received: 11 June 2020 / Revised: 29 June 2020 / Accepted: 6 July 2020 / Published: 9 July 2020
(This article belongs to the Special Issue Energy Efficiency Improvement of Electric Machines without Rare-Earth Magnets)
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Abstract

The paper presents a comparative analysis of life-cycle energy consumption for three different types of 4 kW line-start motors used in a pump unit with throttling: the most widely used induction motor with IE3 efficiency class, line start permanent magnet synchronous motor with IE4 efficiency class and line start synchronous reluctance motor with IE4 efficiency class. The operating cycle for pump units with constant flow is considered for the above-mentioned types of motors taking into account not only the losses in the pump and motor, but also in the power supply cable. It is shown that the line start synchronous reluctance motor without magnets has the highest efficiency over the entire considered loading range. However, its power factor is lower than that of the synchronous motor with magnets and therefore it has more significant losses in power supply cable. Despite this disadvantage, the line-start reluctance motor is a good alternative to widespread induction motor since it allows saving of approximately 4000 euro more than the latter during the 20 years life cycle. It also provides similar savings in comparison to the permanent magnet synchronous motor, but unlike it, it does not have costly rare-earth materials in the rotor.
Keywords: centrifugal pump; energy efficiency; induction motor; line-start synchronous motor; synchronous reluctance motor; throttling control centrifugal pump; energy efficiency; induction motor; line-start synchronous motor; synchronous reluctance motor; throttling control

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MDPI and ACS Style

Kazakbaev, V.; Prakht, V.; Dmitrievskii, V.; Oshurbekov, S.; Golovanov, D. Life Cycle Energy Cost Assessment for Pump Units with Various Types of Line-Start Operating Motors Including Cable Losses. Energies 2020, 13, 3546. https://doi.org/10.3390/en13143546

AMA Style

Kazakbaev V, Prakht V, Dmitrievskii V, Oshurbekov S, Golovanov D. Life Cycle Energy Cost Assessment for Pump Units with Various Types of Line-Start Operating Motors Including Cable Losses. Energies. 2020; 13(14):3546. https://doi.org/10.3390/en13143546

Chicago/Turabian Style

Kazakbaev, Vadim, Vladimir Prakht, Vladimir Dmitrievskii, Safarbek Oshurbekov, and Dmitry Golovanov. 2020. "Life Cycle Energy Cost Assessment for Pump Units with Various Types of Line-Start Operating Motors Including Cable Losses" Energies 13, no. 14: 3546. https://doi.org/10.3390/en13143546

APA Style

Kazakbaev, V., Prakht, V., Dmitrievskii, V., Oshurbekov, S., & Golovanov, D. (2020). Life Cycle Energy Cost Assessment for Pump Units with Various Types of Line-Start Operating Motors Including Cable Losses. Energies, 13(14), 3546. https://doi.org/10.3390/en13143546

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