Characteristic Analyses of Commercial Single-phase High-efficiency Transformers

Characteristic Analyses of Commercial Single-phase High-efficiency Transformers
Abstract 　　The aim of this thesis is to analyze the influence of different lamination shape and its improvement on magnetic field distribution inside the iron core of single-phase transformers.
　　Traditionally, the laminated core is generally adopted and the laminated iron sheets are cut in E-shape and I-shape sheets to reduce core loss in the studied transformer. The reluctance of the magnetic flux path inside the iron core of the studied transformer is affected by the condition of press, shape of laminated core property, effective length and area of flux path. To reduce the reluctance between connection points, the E-shape and I-shape laminated sheets are interchanged to avoid obvious connection line between laminated sheets. This thesis is to simulate magnetic filed distribution of single-phase transformers using electromagnetic field software. The effectiveness of the improved E- and I-shape laminated core will be evaluated in depth for future design of single-phase low-voltage distribution transformers with high-quality, high efficiency, and low core loss.
　　For simulate the inrush current, another model of single-phase transformer written by FORTRAN is compared with experience in this thesis.

FULL THESIS HERE;http://etdncku.lib.ncku.edu.tw/ETD-db/ETD-search/getfile?URN=etd-0706104-111050&filename=etd-0706104-111050.pdf