地铁辅助变流器用变压器电磁振动计算与减振分析
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摘要
针对某地铁辅助变流器用变压器振动问题,进行了变压器模态测试及振动测试,基于试验条件与模型修正方法,建立了变压器电磁场、电磁激振力、振动响应的多物理场耦合分析流程,计算分析了变压器因磁致伸缩产生的电磁力及其电磁振动特性。结果表明:考虑实际电流源三相不对称谐波电流时,铁心磁通密度含有较丰富的3、5、7、9、11次谐波分量,该谐波分量导致铁心产生较大谐波振动。在此基础上提出变压器减振方案,经过仿真计算验证了所提方案的合理性,具有一定工程应用价值。
Aiming at vibration problems of a voltage transformer used in metro auxiliary converter, its modal and vibration measurements were conducted. Based on test conditions and the model updating method, a multi-physical field coupled analysis model including electromagnetic field, electromagnetic excitation and vibration response of the transformer was established. The transformer's electromagnetic force produced due to magneto-striction and its electromagnetic vibration characteristics were calculated and analyzed. The results showed that considering 3-phase asymmetric harmonic current of the actual current source, the magnetic flux density of the iron core contains richer 3, 5, 7, 9 and 11 order harmonic components to cause a stronger harmonic vibration of the iron core. Furthermore, the transformer vibration reduction scheme was proposed. Finally, the simulation calculation verified the rationality of the proposed method. It was shown that the proposed method has a certain engineering application value.
Aiming at vibration problems of a voltage transformer used in metro auxiliary converter, its modal and vibration measurements were conducted. Based on test conditions and the model updating method, a multi-physical field coupled analysis model including electromagnetic field, electromagnetic excitation and vibration response of the transformer was established. The transformer's electromagnetic force produced due to magneto-striction and its electromagnetic vibration characteristics were calculated and analyzed. The results showed that considering 3-phase asymmetric harmonic current of the actual current source, the magnetic flux density of the iron core contains richer 3, 5, 7, 9 and 11 order harmonic components to cause a stronger harmonic vibration of the iron core. Furthermore, the transformer vibration reduction scheme was proposed. Finally, the simulation calculation verified the rationality of the proposed method. It was shown that the proposed method has a certain engineering application value.
引文
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[14] 邓文哲,左曙光,孙罕,等.考虑定子铁芯和绕组各向异性的爪极发电机模态分析[J].振动与冲击,2017,36(12):43-49.DENG Wenzhe,ZUO Shuguang,SUN Han,et al.Modal analysis of a claw-pole alternator considering orthotropy of stator core and windings[J].Journal of Vibration and Shock,2017,36(12):43-49.
[2] BERGQVIST A,LUNDGREN A,STILLESJ? F,et al.Statistical modeling of magnetic and magnetostrictive properties due to domain wall motion[J].Journal of Applied Physics,1999,85(8):5190-5192.
[3] KITAGAWA W,ISHIHARA Y,TODAKA T,et al.Analysis of structural deformation and vibration of a transformer core by using magnetic property of magnetostriction[J].Electrical Engineering in Japan,2010,172(1):19-26.
[4] KUBIAK W,WITCZAK P.Vibration analysis of small power transformer[J].The International Journal for Computation and Mathematics in Electrical and Electronic Engineering,2010,29(4):1116-1124.
[5] 胡静竹,刘涤尘,廖清芬,等.基于有限元法的变压器电磁振动噪声分析[J].电工技术学报,2016,31(15):81-88.HU Jingzhu,LIU Dichen,LIAO Qingfen,et al.Analysis of transformer electromagnetic vibration noise based on finite element method[J].Transactions of China Electrotechical Society,2016,31(15):81-88.
[6] 顾晓安,沈密群,朱振江,等.磁致伸缩的铁磁质在交变电磁场中振动的数学模型[J].噪声与振动控制,2002,22(6):19-22.GU Xiaoan,SHEN Miqun,ZHU Zhenjiang,et al.Mathematical model of vibrations of ferromagnetic materials under magnetization[J].Noise and Vibration Control,2002,22(6):19-22.
[7] 祝丽花.叠片铁心磁致伸缩效应对变压器、交流电机的振动噪声影响研究[D].天津:河北工业大学,2013.
[8] 祝丽花,杨庆新,闫荣阁,等.电力变压器铁心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 magnetostrictive stress of core in power transformer[J].Transformer,2012,49(6):9-13.
[9] 祝丽花,杨庆新,闫荣格,等.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):1-7.ZHU Lihua,YANG Qingxin,YAN Rongge,et al.Research on vibration and noise of power transformer cores including magnetostriction effects[J].Transactions of China Electrotechical Society,2013,28(4):1-7.
[10] 汪金刚,毛凯,段旭,等.直流偏磁下的变压器振动仿真与试验[J].电机与控制学报,2015,19(1):58-67.WANG Jingang,MAO Kai,DUAN Xu,et al.Simulation and test of transformer vibration under DC bias[J].Electric Machines and Control,2015,19(1):58-67.
[11] 王丰华,段若晨,耿超,等.基于“磁-机械”耦合场理论的电力变压器绕组振动特性研究[J].中国电机工程学报,2016,36(9):2555-2562.WANG Fenghua,DUAN Ruochen,GENG Chao,et al.Research of vibration characteristics of power transformer winding based on magnetic-mechanical coupling field theory[J].Proceedings of the CSEE,2016,36(9):2555-2562.
[12] 张艳丽,王洋洋,张殿海,等.交变磁化下电工钢片的矢量磁致伸缩特性[J].中国电机工程学报,2016,36(14):1156-1162.ZHANG Yanli,WANG Yangyang,ZHANG Dianhai,et al.Vector magnetostrictive properties of electrical steel sheet with alternating magnetization[J].Proceedings of the CSEE,2016,36(4):1156-1162.
[13] 张黎,王国政,董攀婷,等.基于磁致伸缩本征特性的晶粒取向性变压器铁心振动模型[J].中国电机工程学报,2016,36(14):3990-4000.ZHANG Li,WANG Guozheng,DONG Panting,et al.Study on the vibration of grain-oriented transformer core based on the magnetostrictive intrinsic characteristics[J].Proceedings of the CSEE,2016,36(14):3990-4000.
[14] 邓文哲,左曙光,孙罕,等.考虑定子铁芯和绕组各向异性的爪极发电机模态分析[J].振动与冲击,2017,36(12):43-49.DENG Wenzhe,ZUO Shuguang,SUN Han,et al.Modal analysis of a claw-pole alternator considering orthotropy of stator core and windings[J].Journal of Vibration and Shock,2017,36(12):43-49.