Vibrations of transformer cores operating with submagnetizing of DC flux

Issue title: Selected Papers from ISEF 2015

Guest editors: Paolo Di Barba and Sƚawomir Wiak

Article type: Research Article

Authors: Majer, Krzysztof

Affiliations: Institute of Mechatronic and Information System, Technical University of Lodz, Stefanowskiego 18/22, 90-924 Lodz, Poland. Tel.: +48 (+42) 631 25 71, 631 25 81; E-mail: krzysztof.majer@p.lodz.pl

Abstract: This paper presents a method for specifying the magnetostrictive vibrations of the transformer cores operating with different submagnetizing of DC flux (for the flow of DC flux through magnetic circuit and as a yoke flux) and for different values of supply voltage (flux density in the core). The theoretical method to determine the content of higher harmonics of magnetostrictive vibrations of the cores was developed. The computation and corresponding measurements were performed for single phase and three phase, three and five legs transformer cores. The discussion was carried out in the frequency range from 50 to 1000 Hz.

Keywords: Magnetostriction, transformer, vibration, DC flux

DOI: 10.3233/JAE-2014

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 51, no. s1, pp. S173-S182, 2016