Vibration of permanent magnet motor with concentrated windings caused by rotor eccentricity

Article type: Research Article

Authors: Witczak, Pawel^{a; *} | Kubiak, Witold^a | Swiniarski, Jacek^b

Affiliations: [a] Institute of Mechatronics and Information Systems, Lodz University of Technology, Lodz, Poland | [b] Department of Strength of Materials, Lodz University of Technology, Lodz, Poland

Correspondence: [*] Corresponding author: Pawel Witczak, Institute of Mechatronics and Information Systems, Lodz University of Technology, Stefanowskiego 18/22, 90-924 Lodz, Poland. Tel.: +48 42 631 2580; Fax: +48 42 636 2309; E-mail: pawel.witczak@p.lodz.pl.

Abstract: The paper presents the combined results of numerical analyses of magnetic vibration introduced by the rotor eccentricity in permanent magnet motor with concentrated windings. The analysis is carried for two possible rotor displacements – uniform shift of its axis against stator and twist of that axis about the gravity point. The investigations were obtained by means of finite elements approach, both in electromagnetic and mechanical domain. The influence of these on magnitude and form of forced vibration is also considered.

Keywords: Permanent magnet motor, vibration, eccentricity, finite elements, spectral analysis

DOI: 10.3233/JAE-170144

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 57, no. 2, pp. 193-203, 2018