Vibration Characteristics Analysis of Iron Core Under DC-biased Condition by Solving Coupled Magneto-mechanical Field in Frequency-domain

被引：0
|
作者：
Zhao X. [1 ,2 ]
Du Y. [1 ]
Liu Y. [3 ]
Du Z. [4 ]
Zhao Z. [2 ]
Liu L. [4 ]
机构：
[1] Department of Electrical Engineering, North China Electric Power University, Baoding
[2] State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin
[3] State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute Co., Ltd., Beijing
[4] Hebei Provincial Key Laboratory of Electromagnetic & Structural Performance of Power Transmission and Transformation Equipment, Baoding
来源：
Gaodianya Jishu/High Voltage Engineering | 2020年 / 46卷 / 04期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Coupled magneto-mechanical field; DC-bias; Laminated core; Magnetostriction; Vibration;
D O I：
10.13336/j.1003-6520.hve.20200430013
中图分类号：
学科分类号：
摘要：
In order to investigate the vibration characteristics of laminated core under DC bias, firstly, magnetostrictive properties of the grain-oriented silicon steel under sinusoidal and DC-biased magnetizations, are measured by using a laser-based measuring system which measures magnetostriction according to Doppler principle, and the effect of DC bias on magnetostriction of grain-oriented silicon steel sheet is analyzed. Secondly, a three-limb laminated core is tested under DC bias, and the vibration of the laminated core is measured by a laser vibrometer. Finally, the coupled magneto-mechanical model in frequency is established and the harmonic balance method is used to calculate the nonlinear magnetic field and displacement, and the computational results are compared with the measured ones to validate the effectiveness of the proposed method. The calculated results show that the DC bias phenomenon aggravates the vibration of laminated core and affects the vibration frequency. © 2020, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：1216 / 1225
页数：9
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