基于改进RCSVPWM的电子水泵高频电磁噪声抑制  

High-Frequency Electromagnetic Noise Suppression of Electronic Water Pump Based on Improved RCSVPWM

作　　者：胡鑫洋 马西沛 刘杰 范平清 HU Xin-yang;MA Xi-pei;LIU Jie;FAN Ping-qing(Shanghai University of Engineering and Science,Automotive Engineering College,Shanghai 201620;China Automobile Research Institute(Changzhou)Automotive Engineering Research Institute Co.,Ltd.,Changzhou 213000)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620 [2]中汽研(常州)汽车工程研究院有限公司,江苏常州213000

出　　处：《制造业自动化》2025年第2期1-8,共8页Manufacturing Automation

基　　金：上海市自然基金面上项目(21ZR1425800);国家自然科学基金(52172371)。

摘　　要：针对车用电子水泵高频电磁噪声的问题,基于改进的随机载波空间矢量脉宽调制(RCSVPWM)方法,提出了一种车用电子水泵高频电磁噪声抑制策略。首先以Xorshift算法为核心设计一种新的随机序列生成器,以产生均匀性较好的随机数,增加对高频谐波幅值的削弱作用。其次结合锯齿波周期函数,分散集中出现在载波频率及其整数倍频段的大量谐波。而后搭建车用电子水泵多平台协同仿真模型对SVPWM、RCSVPWM和改进的RCSVPWM控制策略的谐波抑制效果进行对比分析,验证改进的RCSVPWM控制策略对高频谐波的抑制能力。最后搭建车用电子水泵实验平台,对电子水泵在3种控制策略下的运行结果与仿真结果进行相互验证,谐波扩展因子降低2.35,高频谐波幅值的抑制效果提升10.39%。验证改进的RCSVPWM控制策略能够在不影响原有控制系统的前提下,显著改善车用电子水泵6kHz以上的高频电磁噪声。In this paper,a high-frequency electromagnetic noise suppression strategy for automotive electronic water pumps is proposed based on an improved random carrier space vector pulse width modulation(RCSVPWM)method.Firstly,a new random sequence generator is designed with the Xorshift algorithm as the core to generate random numbers with better uniformity to increase the weakening effect on the high-frequency harmonic amplitude.Secondly,a sawtooth wave periodic function is combined to disperse and concentrate a large number of harmonics appearing at the carrier frequency and its integer multiples.Thereafter,a multi-platform simulation model of automotive electronic water pump is built to compare and analyse the harmonic suppression effects of SVPWM,RCSVPWM and the improved RCSVPWM control strategy,and to verify the suppression ability of the improved RCSVPWM control strategy on high-frequency harmonics.Finally,the experimental platform of the automotive electronic water pump is built,where the operation results of the electronic water pump under the three control strategies are mutually verified with the simulation results.The harmonic expansion factor is reduced by 2.35,and the suppression effect of high-frequency harmonic amplitude is improved by 10.39%.It is verified that the improved RCSVPWM control strategy can significantly improve the high-frequency electromagnetic noise of the automotive electronic water pump without affecting the original control system.

关 键 词：车用电子水泵 高频电磁噪声 谐波抑制 随机载波 Xorshift算法 

分 类 号：TM341[电气工程—电机]