基于周期谐波扩频调制的永磁同步电机高频边带声振抑制  

Periodic Harmonic Spread Spectrum Modulation for High-Frequency Sideband Vibro-Acoustic Suppression in Permanent Magnet Synchronous Motor

作　　者：邱子桢 陈勇[1] 成海全 刘旭[3] 谷丰收[2] Qiu Zizhen;Chen Yong;Cheng Haiquan;Liu Xu;Gu Fengshou(Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles Hebei University of Technology,Tianjin 300130,China;Centre for Efficiency and Performance Engineering(CEPE)University of Huddersfield Huddersfield,HD13DH UK;State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学天津市新能源汽车动力传动与安全技术重点实验室,天津300130 [2]哈德斯菲尔德大学效率与效能工程中心,哈德斯菲尔德HD13DH [3]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300130

出　　处：《电工技术学报》2022年第10期2459-2468,共10页Transactions of China Electrotechnical Society

基　　金：宁波市科技计划项目(2019B10111);家留学基金项目(201906700001);北省研究生创新项目(CXZZBS2021033)资助。

摘　　要：该文以电动汽车后桥驱动用12槽-10极永磁同步电机及其控制系统为研究对象,基于周期谐波扩频调制技术,对常规空间矢量脉宽调制(SVPWM)技术所引入的边带谐波成分与高频声振响应进行抑制与优化研究。分析了边带电流谐波频谱与径向电磁力主要的阶次特征分布。建立了完整的谐波扩频功率谱解析模型,对锯齿波和正弦波两种典型的周期信号进行了理论解析,并分析了扩频宽度和调制因子对抑制效果的影响。通过样机及测控实验平台,对不同工况下的边带电流谐波和声振响应进行了验证。结果表明,周期谐波扩频调制能够有效抑制边带电流谐波,多转速工况下噪声响应的中心频带优化20dBA以上;锯齿波扩频调制的抑制效果优于正弦波扩频调制;正弦波扩频调制对扩频宽度的变化较为敏感。In this paper,a 12-slot/10-pole permanent magnet synchronous motor and control system for the electric vehicle rear axle drive has been taken as the research object.Based on the periodic harmonic spread spectrum modulation technique,the sideband harmonic components and high-frequency vibro-acoustic response introduced by the conventional space vector pulse width modulation(SVPWM)technology are suppressed.The main frequency distribution and other characteristics are analyzed in sideband current harmonics and radial electromagnetic force.A comprehensive power spectrum analysis model of harmonic spread spectrum modulation has been established,where two typical periodic signals of sawtooth wave and sinusoidal wave are analyzed.The influence of bandwidth and modulation ratio on the suppression effect is also discussed.The related sideband current harmonics and vibro-acoustic responses are verified by the measurement and control experimental platform under different operational conditions.The results show that the periodic harmonic spread spectrum modulation can effectively suppress sideband harmonic components,and the central frequency band of noise responses is optimized by more than 20dBA.The sawtooth signal-based scheme exhibits better suppression effect than the sinusoidal signal-based scheme.Moreover,the sideband harmonics in the sinusoidal signal-based scheme are more sensitive to the bandwidth changes.

关 键 词：永磁同步电机 空间矢量脉宽调制 边带电流谐波 谐波扩频调制 振动噪声抑制 

分 类 号：TM341[电气工程—电机]