Chang-Hung Hsu and Yeong-Hwa Chang and Chun-Yao Lee and Chia-Shiang Yao and Yan-Lou He and Huei-Lung Chu and Chia-Wen Chang and Wei-Shou Chan
Effect of Uneven Surface on Magnetic Properties of Febased Amorphous Power Transformer
1390 - 1394
2011
5
10
International Journal of Electrical and Computer Engineering
https://publications.waset.org/pdf/10301
https://publications.waset.org/vol/58
World Academy of Science, Engineering and Technology
This study reports the preparation of soft magnetic
ribbons of Febased amorphous alloys using the singleroller meltspinning technique. Ribbon width varied from 142 mm to 213
mm and, with a thickness of approximately 22 μm ± 2 μm. The microstructure and magnetic properties of the ribbons were
characterized by differential scanning calorimeter (DSC), Xray diffraction (XRD), vibrating sample magnetometer (VSM), and electrical resistivity measurements (ERM). The amorphous material
properties dependence of the cooling rate and nozzle pressure have uneven surface in ribbon thicknesses are investigated. Magnetic
measurement results indicate that some region of the ribbon exhibits good magnetic properties, higher saturation induction and lower coercivity. However, due to the uneven surface of 213 mm wide
ribbon, the magnetic responses are not uniformly distributed. To
understand the transformer magnetic performances, this study analyzes the measurements of a threephase 2 MVA amorphouscored transformer. Experimental results confirm that the transformer with a
ribbon width of 142 mm has better magnetic properties in terms of lower core loss, exciting power, and audible noise.
Open Science Index 58, 2011