A Transformer Model of 3D Finite Element Method Coupled to Electric Circuit Equations

摘要

This paper presents a transformer model of 3D magnetic field finite element method coupled to circuit equations. In the model, T-T_0-Ω formulation is adopted. Different winding connections and asymmetrical loads are included in formulating the model and symmetric equations are obtained. Shortcircuit currents of a three-phase transformer are calculated.