摘要
传统脉振高频电压注入法采用低通滤波器和带通滤波器,在实现永磁同步电机(PMSM)低速域无位置传感器控制时,存在滤波延迟增加、观测精度降低以及动态性能变差的问题.为此,提出基于三参数陷波器(TPNF)的脉振高频电压注入永磁同步电机无位置传感器控制策略.在分析信号处理环节滤波器对系统性能影响的基础上,利用三参数陷波器取代低通滤波器增强对系统中注入高频交流分量的滤除,同时提高电流环带宽和位置估计精度;采用四阶广义积分器(FOGI)代替带通滤波器提取含有位置信息的高频信号,进一步减小滤波延时对位置估计精度的影响,实现对转子位置的精确跟踪和系统动态性能的提升.仿真和实验结果表明,在电机启动、突加负载、带载变速工况下,转子位置估算精度和系统动态响应能力均优于传统方法,能有效提高电机在低速状态下的控制性能.
A pulsating high-frequency voltage injection-based sensorless control strategy for permanent magnet synchronous motor(PMSM)based on a three-parameter notch filter(TPNF)was proposed to address the increased filtering delay,reduced observation accuracy and degraded dynamic performance caused by low-pass and band-pass filters in traditional pulsating high-frequency voltage injection methods for sensorless control of PMSM in the lowspeed range.Based on analyzing the impact of filters in the signal processing stage on system performance,the TPNF was used to replace the low-pass filter to enhance the attenuation of injected high-frequency AC components in the system,while increasing the current loop bandwidth,and improving position estimation accuracy.Additionally,a fourth-order generalized integrator(FOGI)was used to replace the band-pass filter to extract high-frequency signals containing position information,further reducing the impact of filtering delay on position estimation accuracy and improving estimation accuracy.This approach enabled precise rotor position tracking and enhanced the system’s dynamic performance.Simulation and experimental results indicate that the proposed strategy achieves superior rotor position estimation accuracy and dynamic response compared to traditional methods under motor startup,sudden load application,and load-carrying speed variation conditions,effectively improving PMSM control performance at low speeds.
作者
李欣
罗晓宁
LI Xin;LUO Xiaoning(College of New Energy and Power Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《浙江大学学报(工学版)》
北大核心
2025年第12期2655-2666,共12页
Journal of Zhejiang University(Engineering Science)
基金
甘肃省科技重大专项计划资助项目(22ZD6GA028)
甘肃省科技计划资助项目(联合科研基金)(24JRRA853)
甘肃省教育厅:优秀研究生“创新之星项目(2025CXZX-727)”.
关键词
脉振高频电压注入
无位置传感器控制
永磁同步电机(PMSM)
低通滤波器
三参数陷波器
pulsating high-frequency voltage injection
sensorless control
permanent magnet synchronous motor(PMSM)
low-pass filter
three-parameter notch filter
