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Application of Field-Circuit Coupling Method of 3D Transient Finite Element Analysis for Large Power Transformers |
Kang Yahua1, 2, Bai Baodong1, Guo Yuancheng2 |
1. Shenyang University of Technology Shenyang 110870 China; 2. TBEA Shenyang Transformer Group Co., Ltd. Shenyang 110144 China |
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Abstract A 3D transient finite element analysis method coupled electric circuit equations for 3D magnetic leakage field and losses of the structural parts for large power transformer is investigated considering electromagnetic characteristics of ferromagnetic material such as nonlinear and anisotropic in this paper. Measured and computed results of losses to the model indicate the validity of the method proposed using the TEAM Workshop Problem 21C-M1 model as the numerical example.And this method is also applied to numerical calculation for a single-phase auto-power transformer, the calculation error of the structural parts losses is 3.64%, which indicates the validity and feasibility of the method and makes the accurate loss calculation of the structures of large power transformer possible.
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Received: 24 September 2013
Published: 05 November 2014
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