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Volume 10
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10.3390/act10040078
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Article

An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump

by
Tomislav Strinić
1,
Bianca Wex
1,
Gerald Jungmayr
1,*,
Thomas Stallinger
1,
Jörg Frevert
2 and
Martin Panholzer
3
1
Linz Center of Mechatronics GmbH, 4040 Linz, Austria
2
Hanning Elektro-Werke GmbH & Co. KG, D-33813 Oerlinghausen, Germany
3
Uni Software plus GmbH, A-4320 Perg, Austria
*
Author to whom correspondence should be addressed.
Actuators 2021, 10(4), 78; https://doi.org/10.3390/act10040078
Submission received: 10 February 2021 / Revised: 31 March 2021 / Accepted: 10 April 2021 / Published: 15 April 2021
(This article belongs to the Section Precision Actuators)
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Abstract

A sealless pump, also known as a wet rotor pump or a canned pump, requires a stationary sleeve in the air gap to protect the stator from a medium that flows around the rotor and the pump impeller. Since the sleeve is typically made from a non-magnetic electrically conductive material, the time-varying magnetic flux density in the air gap creates an eddy current loss in the sleeve. Precise assessment of this loss is crucial for the design of the pump. This paper presents a method for calculating the eddy current loss in such sleeves by using only a two-dimensional (2D) finite element method (FEM) solver. The basic idea is to use the similar structure of Ampère’s circuital law and Faraday’s law of induction to solve eddy current problems with a magnetostatic solver. The theoretical background behind the proposed method is explained and applied to the sleeve of a sealless pump. Finally, the results obtained by a 2D FEM approach are verified by three-dimensional FEM transient simulations.
Keywords: eddy current loss; air gap sleeve; sealless pump; finite element method eddy current loss; air gap sleeve; sealless pump; finite element method

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MDPI and ACS Style

Strinić, T.; Wex, B.; Jungmayr, G.; Stallinger, T.; Frevert, J.; Panholzer, M. An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump. Actuators 2021, 10, 78. https://doi.org/10.3390/act10040078

AMA Style

Strinić T, Wex B, Jungmayr G, Stallinger T, Frevert J, Panholzer M. An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump. Actuators. 2021; 10(4):78. https://doi.org/10.3390/act10040078

Chicago/Turabian Style

Strinić, Tomislav, Bianca Wex, Gerald Jungmayr, Thomas Stallinger, Jörg Frevert, and Martin Panholzer. 2021. "An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump" Actuators 10, no. 4: 78. https://doi.org/10.3390/act10040078

APA Style

Strinić, T., Wex, B., Jungmayr, G., Stallinger, T., Frevert, J., & Panholzer, M. (2021). An Alternative Method for Calculating the Eddy Current Loss in the Sleeve of a Sealless Pump. Actuators, 10(4), 78. https://doi.org/10.3390/act10040078

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