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Publisher DOI: 10.3390/w10101310
Title: Increasing energy efficiency in water collection systems by submersible PMSM well pumps
Language: English
Authors: Beck, Marcus 
Sperlich, Alexander 
Blank, Ricardo 
Meyer, Eckehard 
Binz, Ralf 
Ernst, Mathias 
Keywords: electrical submersible pumps;permanent magnet synchronous motor;variable-speed operation;optimizing working points;energy efficiency;water collection
Issue Date: 22-Sep-2018
Publisher: MDPI
Source: Water (Switzerland) 10 (10): 1310- (2018-09-22)
Journal or Series Name: Water 
Abstract (english): Water collection based on groundwater abstraction has a high energy consumption that depends primarily on the operation and performance of submersible well pumps. The fact of the matter is that these machines still work with a global energy efficiency of less than 50%, and further investigations of the energy aspects in well pumps are needed. The present study introduces measures to increase the global efficiency of submersible well pumps linked to electrical energy savings. Common submersible pumps with asynchronous motors (ASMs) were compared with innovative permanent magnet synchronous motor (PMSM) technology in real well fields in Berlin and Hamburg waterworks. This study confirms that PMSM pumps showed a 6.8%-points higher global efficiency compared to ASM pumps at optimal working points. The investigation of the impact of well field operation on local pump efficiency offers an additional increase in the global efficiency. In this context, the influence of variable speed control on the global efficiency and the energy consumption was analyzed. Global efficiencies of over 70%, and potential energy savings of up to 20%, were determined for the speed-controlled PMSM pump. This offers water suppliers new incentives to optimize their water collection systems for less energy consumption.
DOI: 10.15480/882.2353
ISSN: 2073-4441
Institute: Wasserressourcen und Wasserversorgung B-11 
Type: (wissenschaftlicher) Artikel
Appears in Collections:Publications (tub.dok)

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