Akademik Veri Yönetim Sistemi
7th International Conference on Superconductivity and Magnetism (ICSM2021), Muğla, Türkiye, 21 - 27 Ekim 2021, ss.346
Comparison of
magnetic properties of toroidal cores using in aerospace industry
Naim Derebasi1
and Ismet Gucuyener2
1 Physics Department, Uludag University, Gorukle Bursa,
16059, Turkey
2 Vocation School of Technical Science, Uludağ
University, Gorukle Bursa, 16059, Turkey
Power loss, permeability,
remenance, coercivity of cores at medium magnetising frequencies are becoming
an important economic, efficiency and performance consideration in the design
of power conversation equipment at aerospace industry. Performance requirements
vary widely in traditional and emerging materials. This choice is often made
more difficult because of a lack of suitable comparative magnetic data measured
under medium frequency magnetisation condition. Grain oriented 3% SiFe is
traditionally used widely, however recent competing materials with improved
magnetic properties are being produced but very few direct comparison of
magnetic properties have been reported.
In
this research direct comparison of ac properties of toroidal cores made from
wound grain oriented, amorphous and nano-crystalline strip materials cores. Measurements
were carried out using a system comprising a magnetisation circuit including a
signal waveform source, an amplifier and a matching transformer and two high
precision multimeters in order to monitor the primary current and secondary
induced voltage [1]. Digitised voltage data from the multimeters is analysed
using LabVIEWä to obtain magnetic properties
of the test specimen.
Artificial neural networks (ANN) and MATLAB® Curve Fitting ToolboxTM are also used to analyse data obtained from the
measurements in prediction and calculation of magnetic properties of these
cores [2]. A simple analytical equation
as depending on experimental results for each core tested for a certain
material has been determined. The results obtained by using the proposed
ANN model and analytical equations are in good agreement with experimental
results.
References
1. N. Derebasi, R. Rygal, A. J. Moses, D. Fox, “A novel
system for rapid measurement of high-frequency magnetic properties of toroidal
cores of different sizes”, J. Magn. Magn. Mat. vol. 215, pp. 684-686, 2000.
2. N. Derebasi, “Effect of geometrical factors on
magnetic induction distribution of toroidal cores using numerical methods”, J.
Supercond. Nov. Magn. vol. 28, no. 3, pp. 767-771, 2015.