基于改进磁链估计法的PMSM无位置传感器控制  

Sensorless Control of Permanent Magnet Synchronous Motor Based on Improved Magnetic Chain Estimation Method

作　　者：郭云珺[1] 马思源 余翔 GUO Yunjun;MA Siyuan;YU Xiang(National Key Laboratory of Science and Technology on Vessel Integrated Power System,Naval University of Engineering,Wuhan 430033)

机构地区：[1]海军工程大学军用电气科学与技术研究所,武汉430033

出　　处：《舰船电子工程》2022年第9期192-195,199,共5页Ship Electronic Engineering

摘　　要：目前,永磁同步电机的中高速区无位置传感器辨识算法中,磁链估计法的应用最为广泛、技术最为成熟,在中高速时对转子位置和转速的估计准确度最高。但传统的磁链估计法普遍存在直流偏置问题和准确估算转子位置问题,为了提高辨识精度,论文提出一种基于二阶高通滤波器的磁链估计法优化策略,二阶高通滤波器由两个相同的一阶高通滤波器串联而成,对于定子磁链的滤波效果更好。最后,通过仿真验证该方法的有效性。Among the sensorless identification algorithms in the medium and high speed region of permanent magnet synchronous motors,the flux linkage estimation method is the most widely used and the most mature method,and the estimation accuracy of rotor position and speed is the highest at medium and high speed. However,the traditional flux linkage estimation method generally has the problem of DC bias and accurate estimation of the rotor position. In order to improve the identification accuracy experiment,this paper proposes an optimization strategy of flux linkage estimation method based on second-order high-pass filter. The second-order high-pass filter is formed by connecting two identical first-order high-pass filters in series,which has better filtering effect on the stator flux linkage. Finally,the effectiveness of the method is verified by simulation.

关 键 词：永磁同步电机 无位置传感器控制 磁链估计 二阶高通滤波器 

分 类 号：TM3[电气工程—电机]