Modelling of Magnetostriction of Transformer Magnetic Core for Vibration Analysis
Open Physics 2017
Jānis Mārks, Sandra Vītoliņa

Magnetostriction is a phenomenon occurring in transformer core in normal operation mode. Yet in time, it can cause the delamination of magnetic core resulting in higher level of vibrations that are measured on the surface of transformer tank during diagnostic tests. The aim of this paper is to create a model for evaluating elastic deformations in magnetic core that can be used for power transformers with intensive vibrations in order to eliminate magnetostriction as a their cause. Description of the developed model in Matlab and COMSOL software is provided including restrictions concerning geometry and properties of materials, and the results of performed research on magnetic core anisotropy are provided. As a case study modelling of magnetostriction for 5-legged 200 MVA power transformer with the rated voltage of 13.8/137kV is conducted, based on which comparative analysis of vibration levels and elastic deformations is performed.


Atslēgas vārdi
magnetostriction, magnetic cores, computer modeling and simulation, vibration measurement, magnetoelectric devices
DOI
10.1515/phys-2017-0094
Hipersaite
https://www.degruyter.com/view/j/phys

Mārks, J., Vītoliņa, S. Modelling of Magnetostriction of Transformer Magnetic Core for Vibration Analysis. Open Physics, 2017, Vol.15, No.1, 803.-808.lpp. ISSN 2391-5471. Pieejams: doi:10.1515/phys-2017-0094

Publikācijas valoda
English (en)
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