Characterization of Electromagnetic Force of the Transformer During the Occurrence of a Ferroresonance Phenomenon by FEM

International Journal of Smart Electrical Engineering

مقاله 6، دوره 08، شماره 02، شهریور 2019، صفحه 75-82   

نوع مقاله: Research Paper

نویسندگان

Iman Rostami¹؛ ahmad zare²؛ alireza shams^{* 3}؛ saeid saberi firoozi⁴

¹Department of Electrical Engineering, islamic azad University, marvdasht, Iran

²Department of Electrical Engineering, islamic azad University, marvdasht, Iran

³Department of Electrical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran

⁴3Department of Electrical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran

چکیده

Ferroresonance is a non-linear resonance which occurs between the capacitors of the cables, lines, and breakers and nonlinear inductance of the reactors and transformers when their core is saturated. Due to ferroresonance, it has been proved that large pulse currents pass through the transformer winding which seems to cause severe electromagnetic forces on the transformer windings. This research work is aimed at characterizing the transformer behavior at ferroresonance mode and calculation of the electromagnetic forces applied on the windings. To this end, a 2D FEM model of a 25KVA distribution transformer is developed. The accuracy of the FEM model is validated by comparing the FEM results and those obtained from the analytical methods. The results of this study are of great importance in the electrical and mechanical design of transformers and their windings. . . . . . . . . . . . . . . . . . . . . . . .

کلیدواژه‌ها

Ferroresonance phenomenon؛ Electromagnetic force؛ Finite element method (FEM)؛ Distribution transformers