Eur. Phys. J. AP
Volume 18, Number 3, June 2002
|Page(s)||173 - 180|
|Section||Nanomaterials and Nanotechnologies|
|Published online||06 June 2002|
Design of a flyback transformer using a stress-annealed iron-based nanocrystalline alloy
Power Electronic research team, LESIR/SATIE, ESA 8029, ENS de Cachan, 61 avenue du Président Wilson, 94230 Cachan, France
2 Magnetic Materials research team, LESIR/SATIE, ESA 8029, ENS de Cachan, 61 avenue du Président Wilson, 94230 Cachan, France
Corresponding author: email@example.com
Revised: 5 March 2002
Accepted: 26 March 2002
Published online: 6 June 2002
This paper presents some results from experiments carried out on a flyback converter whose transformer has been built with a new stress-annealed nanocrystalline (iron-based) material developed by our laboratory team. This original process has provided a low value of relative permeability (around 200) at a high induction level, thereby making it possible to store large amounts of energy. A flyback transformer without air-gap was thus tested in order to evaluate the performance of this material, with highly satisfactory results being obtained. Because of the material's low magnetic losses at a high induction level and high-frequency switching (up to 25 kHz), low transformer losses along with a low temperature rise were observed. A figure of merit is proposed in order to situate our material performances among others.
PACS: 81.07.Bc – Nanocrystalline materials / 84.60.Bk – Performance characteristics of energy conversion systems, figure of merit
© EDP Sciences, 2002
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