变压器铁心的振动将会严重影响其生产质量和使用寿命，针对铁心的振动问题，提出了一种在铁心相邻过渡层之间加入弹性阻尼夹层的方法。采用有限元方法对加入阻尼夹层前后的铁心进行模态分析和谐响应分析，探讨了在加入阻尼夹层前后铁心在不同频率激振力下的振动情况，并利用阻尼夹层实验进行验证。仿真和实验结果均表明，加入阻尼夹层后能有效地降低由于硅钢片磁致伸缩所产生的铁心弯曲振动问题，同时增加阻尼夹层的厚度和层数使得铁心减振效果更明显，这对于指导企业生产低振动的铁心具有参考意义。
Abstract
The vibration of transformer core seriously affects its production quality and service life.Here, aiming at the core vibration problem, a method to add elastic damping interlayer between adjacent transition layers of core was proposed.The finite element method was used to do modal analysis and harmonic response analysis of the core before and after adding damping interlayer, respectively.Vibrations of the core under excitation forces with different frequencies before and after adding damping interlayer were simulated numerically and verified with tests adding damping interlayer.Simulation and test results showed that adding damping interlayer can effectively reduce bending vibration of iron core caused by magnetostriction of silicon steel sheets; increasing thickness and layer number of damping interlayer can make the core vibration reduction effect more obvious; the study results provide a reference for guiding enterprises to produce iron cores with lower vibration.
关键词
变压器铁心 /
阻尼夹层 /
谐响应分析 /
减振
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Key words
transformer core /
damping interlayer /
harmonic response analysis /
vibration reduction
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参考文献
［1］SNELL D.Measurement of noise associated with model transformer cores［J］.Journal of Magnetism and Magnetic Materials,2008,320(20):e535-e538.
［2］WIAK S, NAPIERALSKA-JUSZCZAK E, KUBIAK W, et al.Vibration analysis of small power transformer［J］.The International Journal for Computation and Mathematics in Electrical and Electronic Engineering,2010,29(4):1116-1124.
［3］SNELL D.Noise generated by model step lap core configurations of grain oriented electrical steel［J］.Journal of Magnetism and Magnetic Materials,2008,320(20):e887-e890.
［4］HILGERT T, VANDEVELDE L, MELKEBEEK J.Comparison of magnetostriction models for use in calculations of vibrations in magnetic cores［J］.IEEE Transactions on Magnetics, 2008, 44(6):874-877.
［5］HSU C H, LEE S L, LIN C C, et al.Reduction of vibration and sound-level for a single-phase power transformer with large capacity［J］.IEEE Transactions on Magnetics, 2015, 51(11): 1-4.
［6］祝丽花，杨庆新，闫荣格,等．电力变压器铁心等效磁致伸缩力的数值计算［J］．变压器，2012，49(6)：9-13．
ZHU Lihua, YANG Qingxin, YAN Rongge, et al.Numerical calculation of equivalent magnetostrictive force of power transformer core ［J］.Transformer, 2012, 49(6): 9-13.
［7］鲁殿国．优化和控制大型变压器铁心夹紧力降低本体噪声［J］．变压器，2012，49(3)：25-27．
LU Dianguo.Optimize and control large transformer core clamping force to reduce body noise ［J］.Transformer, 2012, 49(3): 24-27.
［8］韩芳旭.基于流固耦合方法的电力变压器电磁振动与噪声问题研究［D］.沈阳: 沈阳工业大学, 2016
［9］申丹.配电变压器的噪声控制技术研究与应用［D］.淄博: 山东理工大学, 2018
［10］孔庆奕, 李艳超, 安国庆,等.基于产品级铁心模型的变压器工艺系数研究［J］.变压器, 2018, 55(2):52-57.
KONG Qingyi, LI Yanchao, AN Guoqing, et al.Research on transformer process coefficient based on product grade core model ［J］.Transformer, 2018, 55(6): 52-57.
［11］陆玉婷.船用齿轮箱阻尼减振设计及其优化［D］.哈尔滨:哈尔滨工程大学, 2011.
［12］王婷.夹层阻尼圆锯片减振降噪研究［D］.天津:河北工业大学, 2013.
［13］杨阳.黏弹性阻尼材料及夹层板阻尼结构动态力学性能研究［D］.青岛:青岛理工大学.
［14］王康乐.黏弹性阻尼夹层板结构的声振特性研究［D］.镇江：江苏科技大学, 2014.
［15］王慧彩.黏弹性阻尼夹层板动力特性分析及模态实验研究［J］.船舶, 2005(5):11-16.
WANG Huicai.Dynamic characteristics analysis and modal experiment of viscoelastic damping sandwich plate ［J］.Ship, 2005(5): 11-16.
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