纳米晶中频变压器振动来源及非正弦激励下噪声特性研究

朱叶鑫; 王娜; 李丽; 张凡; 汲胜昌

doi:10.13296/j.1001-1609.hva.2026.09.020

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纳米晶中频变压器振动来源及非正弦激励下噪声特性研究

电力装备仿真、热与电磁特性分析 | 更新时间：2026-09-10

- 纳米晶中频变压器振动来源及非正弦激励下噪声特性研究
- Research on Vibration Sources and Noise Characteristics Under Non-sinusoidal Excitation of Nanocrystalline Medium-frequency Transformers
- 高压电器 2026年62卷第9期页码：199-208
- 作者机构：
  
  广东电网有限责任公司珠海供电局，广东珠海 519075
  西安交通大学科技与教育发展研究院，西安 710049
  广东电网有限责任公司电力科学研究院，广州 510080
- 作者简介：
  
  朱叶鑫（1986—），男，电气高级工程师，主要从事变电一次设备相关研究（E-mail：slion60@qq.com）。
  汲胜昌（1976—），男，教授，主要从事电力设备服役特性及其状态评估、交直流设备振动噪声控制与应用等研究（通信作者）（E-mail：jsc@mail.xjtu.edu.cn）。
- 基金信息：
  
  广东电网有限责任公司科技项目;Science and Technology Project of Guangdong Power Grid Co., Ltd.[030400KC23120028](030400KC23120028(GDKIXM20231462))
- DOI：10.13296/j.1001-1609.hva.2026.09.020
  中图分类号：
- 收稿：2026-03-09，
  
  修回：2026-05-08，
  
  纸质出版：2026-09-16
- 稿件说明：
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朱叶鑫, 王娜, 李丽, 等. 纳米晶中频变压器振动来源及非正弦激励下噪声特性研究[J]. 高压电器, 2026,62(9):199-208.

ZHU Yexin, WANG Na, LI Li, et al. Research on Vibration Sources and Noise Characteristics Under Non-sinusoidal Excitation of Nanocrystalline Medium-frequency Transformers[J]. High Voltage Apparatus, 2026, 62(9): 199-208.
朱叶鑫, 王娜, 李丽, 等. 纳米晶中频变压器振动来源及非正弦激励下噪声特性研究[J]. 高压电器, 2026,62(9):199-208. DOI： 10.13296/j.1001-1609.hva.2026.09.020.

ZHU Yexin, WANG Na, LI Li, et al. Research on Vibration Sources and Noise Characteristics Under Non-sinusoidal Excitation of Nanocrystalline Medium-frequency Transformers[J]. High Voltage Apparatus, 2026, 62(9): 199-208. DOI： 10.13296/j.1001-1609.hva.2026.09.020.

摘要

针对非正弦激励下纳米晶中频变压器产生的高频噪声问题日益突出，变压器整体振动来源及噪声特性尚不明确的问题，文中通过测量空载和短路工况下变压器铁心、绕组及压板的振动，明确了振动的主要来源及传递特性，并通过测量不同电压激励下变压器顶面及4个侧面的噪声声压，确定了主要噪声辐射面，研究了电压激励对噪声水平及频谱特性的影响。研究结果表明，在空载和短路工况下，变压器铁心振动幅值均显著高于绕组和压板，铁心是主要振动源，其振动通过结构耦合传递至绕组和压板；除铁心外，绕组和压板也是重要的噪声辐射部位，铁心振动经结构耦合引发绕组和压板振动并辐射噪声；局部压紧力分布不均是导致振动噪声信号中基频分量产生的主要原因。

Abstract

To address the increasingly prominent issue of high-frequency noise generated by nanocrystalline medium-frequency transformers under non-sinusoidal excitation

and the fact that the overall vibration sources and noisec characteristics of the transformer remains unclear

in this paper the vibration measurements on the transformer core

windings

and clamping plates is carried out under both no-load and short-circuit conditions. The primary vibration sources and their transmission characteristics are identified. Furthermore

by measuring the sound pressure levels at the top surface and four side surfaces of the transformer under different voltage excitations

the major noiseradiating surfaces are determined

and the effects of excitation voltages on noise levels and spectral characteristics are analyzed. The research results show that in case of no load and short ciruit conditions the vibration amplitude of the transformer core is significantly higher than that of the windings and clamping plate

indicating that the core is the dominant vibration source. The vibrations are transmitted to the windings and clamping plate through structural coupling. In addition to the core

the windings and clamping plate are also important noise-radiating positions

where core vibrations induce structural vibrations and subsequent noise radiation through mechanical coupling. Moreover

the uneven distribution of local clamping pressure is the primary cause of the fundamental-frequency component observed in the vibration and noise signals.

关键词

Keywords

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