A4 Conference proceedings

Analytical tool for initial estimation of mechanical stress in high-speed bearingless permanent magnet rotors

Publication Details
Authors: Ushakumari Devika Sasi, Sopanen Jussi, Jastrzebski Rafal Piotr, Sikanen Eerik
Publication year: 2018
Language: English
Related Journal or Series Information: European Conference On Power Electronics And Applications
Title of parent publication: 2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)
Journal acronym: EPE-ECCE Europe
Start page: 1
End page: 10
Number of pages: 10
ISBN: 978-1-5386-4145-3
eISBN: 978-9-0758-1528-3
ISSN: 2325-0313
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication


Bearingless drives are a good choice in high-speed applications due to the absence of mechanical friction, vibration control, and smaller machine footprint. However, electromechanical rotor structure optimization is challenging. An analytical tool to predict the initial mechanical stress in high-speed permanent magnet rotors of bearingless drives is proposed in this paper. The tool developed in Matlab is verified with the help of finite element based software Ansys. Two different test cases such as geometry test and speed test were framed to do the testing. Moreover, a correction factor is introduced in the code from the speed test results to improve the accuracy. The reliability of this factor is validated by using the same factor for different geometries in geometry test. The analytical tool developed gave faster and moderately accurate results on testing.

Last updated on 2019-13-03 at 12:00

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