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| Working Magnetic Property Modeling of the Power Transformer Laminated Core With Mitred Joints |
| Du Yong1, Cheng Zhiguang2, Yan Weili1, Fan Yana2, Zhang Junjie2, Liu Lanrong2 |
| 1. Hebei University of Technology Tianjin 300130 China 2. Baoding Tianwei Group Co., Ltd Baoding 071056 China |
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Abstract The magnetic properties of the power transformer laminated core that measured under the standard condition, can not completely reflect the practical working magnetic properties. An efficient method for modeling the global magnetic properties of the laminated core under working condition is investigated based on two core models of product level, which have the same material, joint type and sectional area but different limb length. The magnetic property data of the laminated core are obtained, such as the effective magnetic path length, the magnetization curve, the loss curve, and the exciting power at both the joints and limbs, which can be used in the electromagnetic analyses and optimization design of the power transformer products.
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Received: 07 August 2009
Published: 04 March 2014
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[1] Cheng Z, Hao R, Takahashi N, et al. Engineering- oriented benchmarking of problem 21 family and experimental verification[J]. IEEE Trans. on Magn., 2004, 40(2): 1394-1397.
[2] Cheng Z, Takahashi N, Yang S, et al. Loss spectrum and electromagnetic behavior of problem 21 family[J]. IEEE Trans. on Magn., 2006, 42(4): 1467-1470.
[3] Cheng Z, Takahashi N, Yang S, et al. Eddy current and loss analysis of multi-steel configuration and validation[J]. IEEE Trans. on Magn., 2007, 43(4): 1737-1740.
[4] Cheng Z, Takahashi N, Forghani B, et al. Analysis and measurements of iron loss and flux inside silicon steel laminations[J]. IEEE Trans. on Magn., 2009, 45(3): 1222-1225.
[5] 谢德馨, 杨仕友, 等. 工程电磁场数值分析与综合[M]. 北京: 机械工业出版社, 2009.
[6] 程志光, 高橋則雄, 博札德·弗甘尼, 等. 电气工程电磁热场模拟和应用[M]. 北京: 科学出版社, 2009.
[7] Marketos P, Zurek S, Moses A J. Calculation of the mean path length of the Epstein frame under non-sinusoidal excitations using the double Epstein method[J]. Journal of Magnetism and Magnetic Materials, 2008, 320(20): 2542-2545.
[8] Cheng Z, Hu Q, Jiao C, et al. Laminated core models for determining exciting power and saturation characteristics[C]. World Automation Congress Proc- eedings, 2008, Ⅰ-3: 1215-1218.
[9] 用爱泼斯坦方圈测量电工钢片(带)磁性能的方法[S]. 北京: 中国标准出版社, 2008.
[10] 辜承林, 周克定, 李朗如. 电力变压器铁心磁场和损耗分布的三维数值方法与实施(第三部分铁心搭选区)[J]. 中国电机工程学报, 1993, 13(5): 27-33.
[11] Hu Q. No-load current and magnetic field[R]. BTW Rsearch Rport, 2007. |
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2010, Vol. 25 
