Title :
Nonlinear analysis of the three-phase transformer considering the anisotropy with voltage source
Author :
Lee, Changhwan ; Jung, Hyun-Kyo
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
fDate :
3/1/2000 12:00:00 AM
Abstract :
In this paper, the Newton-Raphson method, using two-directional (anisotropic) material properties, is applied to the analysis of a three-phase transformer. A new two-dimensional (2-D) model that reflects three-dimensional manufacturing effects, such as air-gap and overlapped stacking, is proposed. These effects cannot be dealt with by conventional 2-D methods. In addition, the new method obtains the current waveform phase difference with respect to the voltage source waveform. The analysis is performed by a finite-element method in which a voltage source is included, and its validity is confirmed experimentally
Keywords :
Newton-Raphson method; air gaps; finite element analysis; power transformers; 2-D model; Newton-Raphson method; air-gap; anisotropy; current waveform phase difference; finite-element method; nonlinear analysis; overlapped stacking; three-dimensional manufacturing effects; three-phase transformer; two-dimensional model; two-directional anisotropic material properties; voltage source; voltage source waveform; Air gaps; Anisotropic magnetoresistance; Finite element methods; Material properties; Newton method; Performance analysis; Phase transformers; Stacking; Two dimensional displays; Virtual manufacturing;
Journal_Title :
Magnetics, IEEE Transactions on
