| 应用磁–机械耦合场频域解法的铁芯直流偏磁振动特性分析 |
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| 引用本文： | 赵小军,杜雨彤,刘洋,杜振斌,赵志刚,刘兰荣. 应用磁–机械耦合场频域解法的铁芯直流偏磁振动特性分析[J]. 高电压技术, 2020, 0(4): 1216-1225 |
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| 作者姓名： | 赵小军 杜雨彤 刘洋 杜振斌 赵志刚 刘兰荣 |
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| 作者单位： | 华北电力大学电力工程系;省部共建电工装备可靠性与智能化国家重点实验室（河北工业大学）;全球能源互联网研究院有限公司先进输电技术国家重点实验室;河北省输变电装备电磁与结构性能重点实验室（筹） |
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| 基金项目： | 国家重点研发计划(2017YFB0902703);国家自然科学基金(51777073);河北省自然科学基金(E2017502061);省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学)开放课题基金(EERIKF2018011);中央高校基本科研业务费专项资金(2019MS078)。 |
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| 摘 要： | 为了探究直流偏磁下叠片铁芯的振动特性,首先采用一台基于激光多普勒效应的磁致伸缩测量系统对取向硅钢片在有、无直流偏磁条件下的磁致伸缩特性进行测量,分析直流偏磁对磁致伸缩的影响。其次对三柱叠片铁芯模型在直流偏磁工况下进行实验,用激光测振仪测量铁芯振动。最后建立磁–机械耦合场的频域数值模型,基于谐波平衡法对非线性磁场和位移进行求解,将测量结果和计算结果相比较,验证了所提数值模型及频域分解算法的有效性。计算结果表明直流偏磁不但加剧了变压器铁芯振动,还会影响其振动频率。
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| 关 键 词： | 磁致伸缩 振动 磁–机械耦合场 直流偏磁 叠片铁芯 |
Vibration Characteristics Analysis of Iron Core Under DC-biased Condition by Solving Coupled Magneto-mechanical Field in Frequency-domain |
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| ZHAO Xiaojun,DU Yutong,LIU Yang,DU Zhenbin,ZHAO Zhigang,LIU Lanrong. Vibration Characteristics Analysis of Iron Core Under DC-biased Condition by Solving Coupled Magneto-mechanical Field in Frequency-domain[J]. High Voltage Engineering, 2020, 0(4): 1216-1225 |
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| Authors: | ZHAO Xiaojun DU Yutong LIU Yang DU Zhenbin ZHAO Zhigang LIU Lanrong |
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| Affiliation: | (Department of Electrical Engineering,North China Electric Power University,Baoding 071003,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;State Key Laboratory of Advanced Transmission Technology,Global Energy Interconnection Research Institute Co.,Ltd.,Beijing 102211,China;Hebei Provincial Key Laboratory of Electromagnetic&Structural Performance of Power Transmission and Transformation Equipment,Baoding 071056,China) |
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| Abstract: | 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. |
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| Keywords: | magnetostriction vibration coupled magneto-mechanical field DC-bias laminated core |
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