电工技术学报2017，Vol.32Issue(2)：171-179,9.
考虑饱和效应的永磁同步电机全程无位置传感器控制
Whole Speed Range Sensorless Control of Permanent Magnet Synchronous Motor Considering Saturation Effect
摘要
Abstract
To overcome the difficulty of position estimation for sensorless control of permanent magnet synchronous motor (PMSM) in low-speed range,a start-up method called I/F is adopted.It can ensure PMSM start up in different load conditions.Unscented Kalman filter (UKF) is used for position estimation in middle to high-speed range.Meanwhile,considering saturation effect and filter delay,the varying inductance and filter delay compensation are used to improve position estimation accuracy.Based on the torque-power angle self-stabilization mechanism,a smooth switching method that transforms I/F starting method to UKF based closed loop sensorless control,is implemented to switch current and speed smoothly.The experimental results demonstrate the whole speed range sensorless control is effective.During the changing processes of load and speed,the steady state error of estimated position can be eliminated.关键词
永磁同步电机/无位置传感器控制/恒电流变频起动/无迹卡尔曼滤波/饱和效应Key words
Permanent magnet synchronous motor/sensorless control/I/F start-up/unscented Kalman filter/saturation effect分类
信息技术与安全科学引用本文复制引用
吴春,齐蓉,李兵强,马冬麒..考虑饱和效应的永磁同步电机全程无位置传感器控制[J].电工技术学报,2017,32(2):171-179,9.基金项目
国家自然科学基金资助项目(51407143). （51407143）
