市域列车牵引变压器声辐射特性与降噪措施分析

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (2) : 334-342.

论文

黄佳程1，肖新标1，王奇1，杜星2，周顺元1，都业林3

作者信息 +

Sound radiation characteristics and noise reduction measure of a traction transformer used in the municipal train

HUANG Jiacheng1 ， XIAO Xinbiao1 ， WANG Qi1 ， DU Xing2 ， ZHOU Shunyuan1 ， DU Yelin3

Author information +

文章历史 +

摘要

为了研究牵引变压器对市域列车车内噪声的影响，本文建立了牵引变压器电磁场-结构力场-压力声场的多物理场耦合模型和车内噪声仿真模型，分别通过变压器辐射试验和车内噪声试验验证了牵引变压器和车内噪声仿真模型的有效性。牵引变压器噪声仿真模型考虑了铁心材料的各向异性与磁致伸缩的非线性，车内噪声仿真模型考虑了车体结构特征。为了降低变压器对车内噪声的影响，根据牵引变压器辐射噪声产生机理与现场试验结果，从变压器的结构与电磁参数两方面提出了降噪措施。基于所建立的变压器和车内噪声仿真模型，对降噪措施进行了仿真分析。研究结果表明：铁心刚度增加60%与磁通密度降低10%的降噪方案，降噪效果最明显，车内噪声总值分别降低了8.2 dBA与4.4 dBA，且降低铁心磁通密度在50～5000 Hz范围内对噪声均存在抑制作用；夹件垂向刚度与夹件横向刚度分别增加80%与60%的降噪方案，也可有效降低牵引变压器辐射噪声总值，但仅能抑制一定频率范围内的噪声。

Abstract

In order to study the influence of traction transformer on the interior noise of municipal train. In this thesis, the multi-physical field coupling model of electromagnetic field-structural force field-pressure sound field of traction transformer and the simulation model of vehicle interior noise are established. The effectiveness of the traction transformer and the car body simulation model is verified by the transformer radiation test and the interior noise test respectively. The noise simulation model of traction transformer considers the anisotropy of core material and the nonlinearity of magnetostrictive. The interior noise simulation model considers the structural characteristics of the car body. In order to reduce the influence of transformer on vehicle interior noise. According to the radiation noise generation mechanism and field test results of traction transformer, noise reduction measures are proposed from two aspects of transformer structure and electromagnetic parameters. Based on the established transformer and vehicle noise simulation model, the noise reduction measures are simulated and analyzed. The results show that the noise reduction effect is the most obvious when the core stiffness increases by 60% and the magnetic flux density decreases by 10%. The total noise in the vehicle is reduced by 8.2 dBA and 4.4 dBA respectively. Reducing the core flux density has an inhibitory effect on noise in the range of 50 ~ 5000 Hz. The noise reduction scheme of 80 % and 60 % increase of vertical clamp stiffness and transverse clamp stiffness can also effectively reduce the total radiated noise of traction transformer, but it can only suppress the noise in a certain frequency range.

导出引用

黄佳程1，肖新标1，王奇1，杜星2，周顺元1，都业林3. 市域列车牵引变压器声辐射特性与降噪措施分析[J]. 振动与冲击, 2024, 43(2): 334-342

HUANG Jiacheng1,XIAO Xinbiao1,WANG Qi1,DU Xing2,ZHOU Shunyuan1,DU Yelin3. Sound radiation characteristics and noise reduction measure of a traction transformer used in the municipal train[J]. Journal of Vibration and Shock, 2024, 43(2): 334-342

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