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Nonlinear analysis of the three-phase transformer considering the anisotropy with voltage source

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2 Author(s)
Changhwan Lee ; Sch. of Electr. Eng., Seoul Nat. Univ., South Korea ; Hyun-Kyo Jung

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

Published in:

IEEE Transactions on Magnetics  (Volume:36 ,  Issue: 2 )