Research on Vibration and Noise of Power Transformer Cores Including Magnetostriction Effects
Zhu Lihua1, Yang Qingxin1, 2, Yan Rongge1, Zhan Xian2
1. Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China 2. Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy Tianjin Polytechnic University Tianjin 300387 China
Abstract：An important source of transformer noise is magnetostrictive vibration of the magnetic core. In order to calculate the vibration due to magnetostriction(MS), magneto-mechanical strong coupled model for power transformer cores including anisotropic reluctivity tensor and MS is founded based on the energy variation principle. Using the proposed model, the magnetic flux and vibration of three-phase three-column transformer cores with no-load are calculated by the finite element method. And on the basis of the vibration calculation, the acoustic field around the transformer is analyzed. In order to verify the model, vibration and noise were studied experimentally. Numerical calculation results together with experimental results confirm the validity of the proposed method. Furthermore, this method which could help prediction the noise level in transformer design step and seek new denoise methods has great potential in the future application.
祝丽花, 杨庆新, 闫荣格, 张献. 考虑磁致伸缩效应电力变压器振动噪声的研究[J]. 电工技术学报, 2013, 28(4): 1-6.
Zhu Lihua, Yang Qingxin, Yan Rongge, Zhan Xian. Research on Vibration and Noise of Power Transformer Cores Including Magnetostriction Effects. Transactions of China Electrotechnical Society, 2013, 28(4): 1-6.
[1] 奚晓勤. 变压器噪声产生的原因及降低噪声的措施[J]. 华东电力, 2012, 40(4): 687-688. [2] Wataru Kitagawa, Yoshiyuki Ishihara. Analysis of structural deformation and vibration of a transformer core by using magnetic property of mangnetostriction [J]. Electrical Engineering in Japan, 2010, 172(1): 19-26. [3] Baguley C A, Madawala U K, Carsten B. The impact of vibration due to magnetostriction on the core losses of ferrite toroidals under DC bias[J]. IEEE Trasactions on Magnetics, 2011, 47(8): 2022-2028. [4] Tom Hilgert, Lieven Vandevelde, et al. Comparison of magnetostriction models for use in calculations of vibration in magnetic cores[J]. IEEE Transactions on Magnetics, 2008, 44(6): 874-877. [5] Koen Delaere, Ward Heylen, Kay Hameyer, et al. Local mangetostriction forces for finite element analysis[J]. IEEE Transactions on Magnetics, 2000, 36(5): 3115-3118. [6] Besbes M, Ren Z, Razek A. Finite element analysis of magneto-mechanical coupled phenomena in magnetostrictive materials[J]. IEEE Transactions on Magnetics, 1996, 32(3): 1058-1061. [7] Zhu lihua, Yang Qingxin, Yan Rongge. Numerical analysis of vibration due to magnetostriction of three phase transformer core[C]. Proceedings of the 6th International Conference on Electromagnetic Field Problems and Applications (ICEF’ 2012), 2012. [8] Anderson P I, Moses A J, Stanbury H J. Assessment of the stress sensitivity of magnetostriction in grain- oriented silicon steel[J]. IEEE Transactions on Magnetics, 2007, 43(8): 3467-3476. [9] 闫荣格, 杨庆新, 杨文荣, 等. 超磁致伸缩加速度传感器[J]. 中国电机工程学报, 2009, 29(24): 104-108. [10] Kaimori H, Kameari A, Fujiwara K. FEM computation of magnetic field and iron loss in laminated iron core using homogenization method[J]. IEEE Transactions on Magnetics, 2007, 43(4): 1405- 1408. [11] Moses AT, Anderson PI, Phophongviwat. T, et al. Contrilution of niagnetostriction to transformer noise[C]. Proceedings of the 31st lnternational Universities Power Engineering Conferenct, 2010: 1-5. [12] Nabil Hihat, Ewa Napieralska-Juszczak, Jean- Philippe Lecointe, et al. Equivalent permeability of step-lap joint of transformer cores: computational and experimental considerations[J]. IEEE Transactions on Magnetics, 2011, 47(1): 244-251. [13] Witod Kubiak, Pawel Witczak. Vibration analysis of small power transformer[J]. The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2010, 29(4): 1116-1124. [14] 颜威利, 杨庆新, 汪友华. 电气工程电磁场数值分析[M]. 北京: 机械工业出版社, 2006. [15] 李太宝. 计算声学: 声场的方程和计算方法[M]. 科学出版社, 2005.
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