基于非注入法PMSM低速域无位置传感器控制  

Sensorless Control of PMSM Based on Non-injection Method in Low Speed Domain

作　　者：谢曼莎 李萍[1] 赵峰[2] 肖惠文 连广坤[2] XIE Mansha;LI Ping;ZHAO Feng;XIAO Huiwen;LIAN Guangkun(School of Automation,Beijing Information Science&Technology University,Beijing 100192;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190)

机构地区：[1]北京信息科技大学自动化学院,北京100192 [2]中国科学院电工研究所,北京100190

出　　处：《电气工程学报》2022年第3期154-161,共8页Journal of Electrical Engineering

基　　金：北京信息科技大学2019年度“实培计划”;国家自然科学基金(51907189);教育部产学合作协同育人(201902310019);北京信息科技大学2020年度教改重点(2020JGZD02)资助项目。

摘　　要：针对永磁同步电机低速段无位置传感器控制中,常用的高频注入法由于外加注入信号,带来额外的噪声和损耗问题,实现了一种仅需要检测在零电压矢量作用下的电流导数,便能对电机转子位置进行准确估计的方案。在零电压矢量作用区间内,通过对估计旋转轴系下的永磁同步电机方程进行推导,得出d轴电流导数与角度位置的关系。最后,在Matlab/Simulink仿真软件环境下对此算法进行验证,仿真结果表明,在带载起动及转速阶跃情况下,此算法能准确快速地估算出电机转子位置,位置误差小于1°。Considering the additional noise and loss caused by the commonly used high-frequency injection method at the low-speed range,a new method is proposed,only the current derivative under the action of zero voltage vector in the SVPWM control mode is required to estimate the position.Under the range of the action of zero voltage vector,the relationship between the d-axis current derivative and the rotor position is obtained by deriving the equation of the PMSM under the estimated rotating coordinate.This algorithm is verified in the Matlab/Simulink,and the simulation results show that this algorithm can estimate the rotor position accurately and quickly under the condition of starting with load and step input of speed,and the position error is less than 1°.

关 键 词：永磁同步电机 无位置传感器控制 电流导数 零电压矢量 

分 类 号：TM921[电气工程—电力电子与电力传动]