Title
Transformer core vibration measurements by means of laser scanning vibrometer Transformer core vibration measurements by means of laser scanning vibrometer
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
conferenceObject
Publication
Maastricht :Shaker publishing bv ,
Subject
Physics
Engineering sciences. Technology
Source (journal)
OPTICAL MEASUREMENT TECHNIQUES FOR STRUCTURES & SYSTEMS III
Source (book)
6th International Conference on Optical Measurement Techniques for, Structures and Systems III (OPTIMESS2015), APR 08-09, 2015, Univ Antwerp, Univ Antwerp, Antwerp, BELGIUM
Volume/pages
(2016) , p. 95-105
ISBN
978-90-423-0439-0
ISI
000373413300010
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
A major part of the transformer noise and vibrations comes from the deformation of the magnetoelastic material of the transformer core. In this work the vibrations of a test transformer core are measured by means of a laser scanning vibrometer. Due to the presence of the higher harmonics in the grid voltage, in addition to a purely sinusoidal magnetisation of the core the presence of a third harmonic is also studied. The vibrations of three points along the core leg are measured. Moreover, for a better illustration of the deformation a 3-dimensional surface scan of the core leg is also performed. The results show that the core deforms more in the corners than in the middle of the leg. The influence of the third harmonic of the magnetisation on the core deformation is also more significant in the corners of the leg. The core deformation shape under a sinusoidal magnetisation with a higher harmonic is more wavy and fluctuating than that under a purely sinusoidal magnetisation.
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