Influence of magnetic forces and magnetostriction on the vibration behavior of an induction motor

Article type: Research Article

Authors: Sathyan, Sabin^a; | Aydin, Ugur^a | Lehikoinen, Antti^a | Belahcen, Anouar^{a; b} | Vaimann, Toomas^b | Kataja, Juhani^c

Affiliations: [a] Department of Electrical Engineering and Automation, Aalto University, Finland | [b] Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Tallinn, Estonia | [c] CSC-IT Center for Science, Espoo, Finland

Correspondence: [*] Corresponding author: Sabin Sathyan, Department of Electrical Engineering and Automation, School of Electrical Engineering, Aalto University, P.O. Box 15500, 00076, Aalto, Finland. E-mail: sabin.sathyan@aalto.fi

Abstract: This paper presents the vibration analysis and results of an induction motor through two kinds of magneto-mechanical coupling methods. The computation results are validated by comparing them with the vibration measurements of the motor. The role of both the magnetic forces and magnetostriction are examined and distinguished based on their contribution to the vibration behavior of the machine. It was found that the pole pair number of an induction machine can affect the way the vibrations caused by magnetostriction and magnetic forces either add up or oppose each other.

Keywords: Finite element analysis, magnetic forces, magnetostriction, magnetomechanical coupling

DOI: 10.3233/JAE-171045

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 3, pp. 825-834, 2019