现代电子技术2024，Vol.47Issue(20)：57-64,8.DOI:10.16652/j.issn.1004-373x.2024.20.010
一种抑制高速电机低次电流谐波的调制方法
Modulation method for suppressing low order current harmonics in high speed motor
摘要
Abstract
In allusion to the problem of high current harmonics caused by low carrier ratio and digital control delay in high-speed permanent magnet synchronous motors,an improved specific sub-harmonic elimination modulation method is proposed to suppress low order current harmonics.The modulation waveform principle and digital implementation characteristics of this modulation method are analyzed,and new voltage harmonic equations and switch angle solving equations are established.With the total harmonic distortion of current as the objective optimization function,the effects of modulation ratio and carrier ratio on switch angle distribution and current harmonic content are researched.Taking the three-phase high-speed permanent magnet synchronous motor as the research object,a system simulation model is built to verify the proposed modulation method.The verified results show that,in comparison with the specific sub-harmonic elimination modulation method,this modulation method has less computation and can improve the symmetry of the output pulse width modulation waveform,with better ability to suppress low-order current harmonics.关键词
高速永磁同步电机/特定次谐波消除/电流谐波抑制/低载波比/开关角/总谐波失真/脉宽调制Key words
high-speed permanent magnet synchronous motor/specific sub-harmonic elimination/current harmonic suppression/low carrier ratio/switching angle/total harmonic distortion/pulse width modulation分类
电子信息工程引用本文复制引用
张国强,刘剑,吴奎奎,张红旗..一种抑制高速电机低次电流谐波的调制方法[J].现代电子技术,2024,47(20):57-64,8.基金项目
山东省重点研发计划军民融合类(2023JMRH0303) （2023JMRH0303）
