摘要
永磁同步电机无传感器控制能够显著提高驱动系统的鲁棒性和可靠性,并降低成本。针对基于高频信号注入无传感器控制中滤波环节导致系统性能降低的问题,提出一种基于滑动平均滤波的无传感器控制策略。在分析高频信号处理环节对电流环及转子位置观测性能影响基础上,进而提出一种基于滑动平均滤波的无传感器控制方法。该方法利用滑动平均滤波代替电流环中反馈通路上以及位置误差获取环节的传统滤波器,提高了无传感器系统控制性能。试验结果表明,该方法可减少反馈电流谐波含量,有效提升系统带宽;同时可有效提取高频电流,改善位置观测动态性能。
Sensorless control of PMSM can significantly improve the robustness and reliability of the drive system and reduce the cost.Aiming at the problem of system performance degradation caused by filtering in sensorless control based on high frequency signal injection,an improved sensorless control strategy based on moving average filtering is proposed.First of all,based on the analysis of the high frequency signal processing part of current loop and the rotor position based on observed performance impact,a kind of sensorless control method based on moving average filter is put forward.Instead of the position error in the feedback path in the current loop and link of the traditional filter,the moving average filter is used in this method,the control performance without sensor system is improved.Experimental results show that the harmonic content of feedback current is reduced and the bandwidth of the system is effectively improved in this method.At the same time,the high frequency current can be extracted effectively and the dynamic performance of position observation can be improved.
作者
张开继
张国强
李宇欣
王高林
徐殿国
ZHANG Kaiji;ZHANG Guoqiang;LI Yuxin;WANG Gaolin;XU Dianguo(School of Electrical Engineering and Automaion,Harbin Institute of Technology,Harbin 150006)
出处
《电气工程学报》
CSCD
2021年第4期93-100,共8页
Journal of Electrical Engineering
基金
国家自然科学基金资助项目(51961130385)。
关键词
永磁同步电机
无传感器控制
滑动平均滤波器
高频注入
Permanent magnet synchronic motor
sensorless control
moving average filter
high frequency injection
