基于变参数锁相环的永磁同步电机转子位置检测  

Rotor Position Detection of PMSM Based on Variable Parameter PLL

作　　者：李月英[1] 左明鑫[1] LI Yueying;ZUO Mingxin(School of Electric Engineering,Zhengzhou College of Science&Technology,Zhengzhou 450064,Henan,China)

机构地区：[1]郑州科技学院电气工程学院,河南郑州450064

出　　处：《电气传动》2020年第7期13-18,共6页Electric Drive

基　　金：河南省科技攻关项目(182102110336)。

摘　　要：永磁同步电机的转子位置检测常采用锁相环来处理正交的位置信号。为保证稳态精度,其截止频率需要足够低,以保证位置结果中不包含高频噪声,但也使得锁相环的带宽受限。因此固定参数的锁相环难以同时满足稳态精度和动态性能要求。为此,推导了锁相环PI参数与卡尔曼滤波器噪声参数之间的关系,明确了噪声参数的物理意义,并据此选取合适的锁相环参数。实验结果表明,所提方法能够在满足稳态精度要求的同时提高动态性能。phase-locked loop(PLL)is often used to process the quadrature position signals for rotor position detection of permanent magnet synchronous motor(PMSM).In order to ensure the steady-state accuracy,the cut-off frequency of PLL needs to be low enough to ensure that the calculated position does not contain high-frequency noise,which also makes the bandwidth of the PLL limited.Therefore,PLL with the fixed parameters is difficult to meet the steady-state accuracy and dynamic performance requirements at the same time.Targeting on this problem,the relationship between the PI parameters of PLL and the noise parameters of Kalman filter was derived.Then,the physical meaning of the noise parameter was clarified,and the appropriate PLL parameters were obtained accordingly.The experimental results show that the proposed method can improve the dynamic performance while meeting the requirements of steady-state accuracy.

关 键 词：永磁同步电机 变参数锁相环 卡尔曼滤波器 

分 类 号：TM351[电气工程—电机]