Abstract—Accuracy in theoretical prediction of performance of transformers has become increasingly important to effect economy in design and to ensure reliability of operation. Some of the performance indicators that the power system engineers are concerned with are reactance, electromagnetic forces, short circuit impedance etc. In recent years, finite element methods have been increasingly used. One of the drawbacks in the flux plots so obtained is that at all infinitely permeable iron surface the flux lines are not normal to the iron surface. To eliminate these errors on the boundaries special finite elements i.e. incremental curved elements with linear and cubic variations have been developed. Their incorporation would modify the usual shape functions. With the help of modified shape functions the magnetic vector potentials are solved. Leakage reactance, the magnetic force, energy is calculated and flux plots obtained.
 

Index Terms—transformer, power system computing finite element method flux plots

Cite: Tarlochan Kaur and Raminder Kaur, "Modeling and Computation of Magnetic Leakage Field in Transformer Using Special Finite Elements," International Journal of Electronics and Electrical Engineering, Vol. 4, No. 3, pp. 231-234, June 2016. doi: 10.18178/ijeee.4.3.231-234