电工技术学报2018，Vol.33Issue(4)：900-909,10.DOI:10.19595/j.cnki.1000-6753.tces.161621
考虑逆变器输出谐波的永磁同步电机转子位置估计误差分析
Error Analysis of Rotor Position Estimation for Permanent Magnet Synchronous Motor Considering Output Harmonics of Inverter
摘要
Abstract
Since there is error in estimating rotor position by pulsating high frequency voltage injection method of permanent magnet synchronous motor (PMSM), the error analysis theory of rotor position estimation is proposed based on high frequency voltage harmonic analysis. Because the power tube switch discretization causes three-phase inverter output harmonics, the Fourier series expansion of three-phase bridge tube switch vector is carried out. Then SVPWM modulation theory is combined to calculate the switching time of each tube, and the fundamental component of voltage is calculated. On this basis, the source of the rotor position estimation error is analyzed and the error expression is deduced. The influence of various system parameters on rotor position estimation error is verified by simulation, numerical analysis and experiment. It provides the theoretical basis for the selection and optimization of the control system parameters related to high frequency voltage injection method of PMSM.关键词
永磁同步电机/脉振高频电压注入/谐波分析/转子位置估计误差/参数优化Key words
Permanent magnet synchronous motor/pulsating high frequency voltage injection/harmonic analysis/rotor position estimation error/parameter optimization分类
信息技术与安全科学引用本文复制引用
魏海峰,韦汉培,张懿..考虑逆变器输出谐波的永磁同步电机转子位置估计误差分析[J].电工技术学报,2018,33(4):900-909,10.基金项目
国家自然科学基金项目(61503161)和江苏省产学研前瞻性联合研究项目(BY2016073-01)资助. （61503161）
