A method based on synchronization strategy for suppressing vibration noise by injecting square wave harmonics

CAI Guanghan; YANG Fan; FENG Ling; HU Liang; ZHENG Gang

doi:10.13890/j.issn.1000-128X.2024.02.002

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A method based on synchronization strategy for suppressing vibration noise by injecting square wave harmonics

Converting and Control | 更新时间：2024-08-02

- A method based on synchronization strategy for suppressing vibration noise by injecting square wave harmonics
- Electric Drive for Locomotives Issue 2, Pages: 16-24(2024)
- 作者机构：
  
  1.中车株洲电力机车研究所有限公司，湖南株洲 412001
  2.株洲中车时代电气股份有限公司，湖南株洲 412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2024.02.002
  CLC： TM351
- Published：10 March 2024，
  
  Received：01 March 2024，
- 稿件说明：
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蔡广瀚, 杨帆, 冯凌, 等. 一种基于同步策略的方波谐波注入振动噪声抑制方法[J]. 机车电传动, 2024(2): 16-24.

CAI Guanghan, YANG Fan, FENG Ling, et al. A method based on synchronization strategy for suppressing vibration noise by injecting square wave harmonics[J]. Electric drive for locomotives,2024(2): 16-24.
蔡广瀚, 杨帆, 冯凌, 等. 一种基于同步策略的方波谐波注入振动噪声抑制方法[J]. 机车电传动, 2024(2): 16-24. DOI：10.13890/j.issn.1000-128X.2024.02.002.

CAI Guanghan, YANG Fan, FENG Ling, et al. A method based on synchronization strategy for suppressing vibration noise by injecting square wave harmonics[J]. Electric drive for locomotives,2024(2): 16-24. DOI：10.13890/j.issn.1000-128X.2024.02.002.

摘要

针对永磁同步电机传统谐波注入方法抑制振动噪声过程中，注入谐波电流频率在奈奎斯特频率附近时存在的频率混叠问题，文章提出了一种基于同步策略的方波谐波注入振动噪声抑制优化方法。首先分析永磁同步电机噪声问题，并对传统谐波注入方法的抑制机理、控制标定以及频率混叠现象进行了介绍；其次阐述了同步策略优化方法的实现原理，即保持逆变器开关频率与注入方波谐波电流频率同步变化，实现谐波电流幅值提升与阶次固定；最后通过试验对比，同步策略优化方法能够有效地改善频率混叠现象，48阶噪声平均降低6.4 dB，96阶噪声平均降低5.6 dB，均优于传统谐波注入方法。

Abstract

This paper presents an optimization method based on a synchronization strategy for suppressing vibration noise in permanent magnet synchronous motors (PMSM) through square wave harmonic injection

to address the frequency aliasing issue that occurs at the injected harmonic current frequency near the Nyquist frequency in traditional harmonic injection methods. It began with a noise analysis for PMSMs

and elucidates on the suppression mechanism

control calibration

and frequency aliasing associated with traditional harmonic injection methods. In the subsequent sections

the implementation principle of the proposed optimization method based on the synchronization strategy was expounded. The aim was to maintain synchronization between the inverter switching frequency and the injected square wave harmonic current frequency. This synchronization facilitated the enhancement of harmonic current amplitude and stabilization of the harmonic current order. In the final part

an experimental comparison was elaborated

showcasing that the optimization method centered on the synchronization strategy effectively alleviated frequency aliasing. Results indicate an average reduction of 6.4 dB in 48th order noise and 5.6 dB in 96th order noise

surpassing the outcomes obtained with traditional harmonic injection methods.

关键词

永磁同步电机振动噪声同步策略方波谐波注入

Keywords

permanent magnet synchronous motor (PMSM)vibration noisesynchronization strategysquare wave harmonic injection

references

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