基于SMO的PMSM磁极位置检测技术  

Pole position detection techniques of PMSM based on SMO

作　　者：赵金良[1] 杨贵杰[1] 赵品志[1] 郭清风[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2010年第1期95-99,共5页Journal of Harbin Institute of Technology

基　　金：哈尔滨工业大学交叉学科基金资助项目(HITMD200305)

摘　　要：为构造低成本、高可靠性的永磁同步电机(PMSM)无位置传感器控制系统,对基于滑模观测器(SMO)的PMSM磁极位置检测技术进行研究.基于滑模变结构和矢量控制理论设计了滑模观测器,用于估算电机的反电势,并构造了采用锁相环(PLL)结构的磁极位置检测单元.仿真和实验结果表明,所设计的观测器能较准确地估算电机反电势,但存在一定的高频抖振,而锁相环单元能在很大程度上减小高频分量对角度估算的影响,提出的方法能实现较高精度的磁极位置检测.To construct a control system without position sensors for PMSM with low cost and high reliability,the pole position detection techniques of PMSM based on SMO were studied.First,a SMO based on sliding mode control and vector control was designed to estimate the back EMF of motor,and then a position detected system based on PLL was constructed.Results of experiment and simulation show that the designed SMO can accurately estimate the back EMF,but chattering at high frequency will occur.However,the PLL based system can effectively reduce the effect of chattering and improve the precision of position detection.

关 键 词：PMSM 滑模观测器 锁相环 磁极位置检测 

分 类 号：TM341[电气工程—电机]