摘要
为了研究电流谐波输入下的电磁振动问题,基于电流解析模型和保角映射建立了电流谐波输入下的磁场解析模型,探究了气隙磁场、二维电磁力波和电磁转矩的时空特性,分析了开关频率对振动的影响。利用电流仿真模型和实测电流建立全频段电流谐波解析模型,分析了高频电流谐波输入下的气隙磁场分布规律,并对样机进行振动响应仿真和实验,提出了减振措施。结果表明:本文模型揭示了电磁力波和电磁转矩的全貌及其来源,高频电磁力波包含3个分量,不同工况下电磁力波的非零最小空间阶次是相同的;基于电磁力分布提出的避振策略能够有效降低电磁振动水平,为高频减振提供了有效方法。
Aiming to analyze the electromagnetic vibration problem under harmonic current input,an analytical model of the magnetic field under full-frequency harmonic current input is established using a current analytical model and conformal mapping.The space-time characteristics of the air-gap magnetic field,two-dimensional elec-tromagnetic force,and torque are investigated,along with the effect of switching frequency on vibration.First,an analytical model of full-frequency harmonic current is established based on the motor simulation model and meas-ured current.Then,the analytical model of the magnetic field is derived,and the distribution of the air-gap mag-netic field under high-frequency harmonic current input is analyzed.Finally,vibration response simulations and ex-periments of the prototype are performed,and vibration reduction measures are proposed.The results show that the analytical model reveals a comprehensive view of electromagnetic waves,electromagnetic torque,and their sources.High-frequency electromagnetic force comprises three parts.The order of non-zero minimum space remains consist-ent across different working conditions.A vibration avoidance strategy based on electromagnetic force distribution effectively reduces the electromagnetic vibration level.This model provides an effective method for high-frequency vibration reduction.
作者
魏琦
邱威森
率志君
李玩幽
曾德鹏
WEI Qi;QIU Weisen;SHUAI Zhijun;LI Wanyou;ZENG Depeng(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《哈尔滨工程大学学报》
北大核心
2025年第4期727-736,共10页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(52107040).
关键词
电磁力波
振动响应
永磁同步电机
电磁转矩
振动抑制
高频谐波
磁场模型
开关频率
electromagnetic force
vibration response
permanent magnet synchronous motors
electromagnetic torque
vibration suppression
high-frequency harmonic
magnetic field model
switching frequency
