机车变压器电磁噪声抑制及仿真优化研究
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摘要
某机车现场运行时机械间变压器电磁噪声突显,产生刺耳的啸叫声,严重影响听觉。针对这一现象,开展了变压器现场和车间电磁噪声声学测试,了解其声学特性,在此基础上结合变压器实际安装情况及声传播特性,提出了声学包装优化方案,并对优化方案进行了声学仿真计算和试验验证。结果表明,优化方案能明显改善现场变压器电磁噪声水平,提高值乘舒适性,且成本较低。
It was found that the electromagnetic noise of a certain transformer of a locomotive on site was prominent, resulting in harsh screech, which seriously affects hearing. In view of this phenomenon, the acoustic tests of electromagnetic noise of transformer were carried out in the field and workshop to study the acoustic characteristics, based on which the optimization scheme of acoustic packaging was put forward according to the actual installation condition and sound propagation characteristics of the transformer, and the acoustic simulation calculation and experimental verification of the optimization scheme were carried out. The results showed that the optimized scheme could significantly improve the electromagnetic noise performance of the transformer and the riding comfort with low cost.
It was found that the electromagnetic noise of a certain transformer of a locomotive on site was prominent, resulting in harsh screech, which seriously affects hearing. In view of this phenomenon, the acoustic tests of electromagnetic noise of transformer were carried out in the field and workshop to study the acoustic characteristics, based on which the optimization scheme of acoustic packaging was put forward according to the actual installation condition and sound propagation characteristics of the transformer, and the acoustic simulation calculation and experimental verification of the optimization scheme were carried out. The results showed that the optimized scheme could significantly improve the electromagnetic noise performance of the transformer and the riding comfort with low cost.
引文
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[2]刘斌,李耘茏,周安德,等.变压器电磁啸叫分析及研究[J].电力机车与城轨车辆,2016,39(1):54-57.
[3]王永胜,丁杰,张平,等.高速动车组牵引变流器振动特性及隔振优化研究[J].振动与冲击,2017,36(2):134-138.
[4]何海华,王炳宽,苏亮,等.轨道交通CC750MS型双流制牵引辅助集成变流器[J].城市轨道交通研究,2014(9):116-118.
[5]王佳音.硅钢片磁致伸缩及直流偏磁下变压器振动噪声问题研究[D].沈阳:沈阳工业大学, 2016.
[6]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.
[7]GIRGIS R, ANGER J, CHU D. The sound of silence-Designing and producing silent transformers[J]. ABB Review, 2008(2):47-57.
[8]BARTOLETTI C, DESIDERIO M, DICARLO D, et al. Vibrioacoustictechniquestodiagnosepowertransformers[J].IEEE Transactions on Power Delivery, 2004, 19(1):221-229.
[9]董志刚.变压器的噪声[J].变压器,1996(3):30-35.
[10]王瑞田,肖飞,陈俊全,等.大容量非晶合金中频变压器的噪声抑制技术[J].海军工程大学学报,2014,26(5):10-13.
[11]马大猷.噪声与振动控制工程手册[M].北京:机械工业出版社,2002.
[12]彭学娟,李丽君,沈玉凤,等.拖拉机驾驶室声学特性仿真研究[J].噪声与振动控制,2010,30(1):51-54.