电工技术学报2018，Vol.33Issue(9)：1967-1974,8.DOI:10.19595/j.cnki.1000-6753.tces.170195
一种改进的永磁同步电机低速无位置传感器控制策略
An Improved Low Speed Sensorless Control Strategy for Permanent Magnet Synchronous Motor
摘要
Abstract
An improved low speed sensorless control strategy for permanent magnet synchronous motor (PMSM) is proposed. Differing from conventional methods,such as the injection of a rotating carrier voltage into a stationary reference frame and the injection of a pulsating carrier voltage into an estimated synchronous reference frame,the proposed method injects a pulsating high-frequency carrier voltage into a stationary reference frame,and the rotor position information can be retrieved from the carrier current response. This paper gives a description for the selection of signal injection and the design of filter frequency, and the use of a two-phase-type-locked loop(TP-PLL) is similar to the simplified extended kalman filter to get the position of the final estimate value. The effectiveness of the method is verified by experiments. The results show that the proposed method can obtain the rotor position information quickly and accurately, and has good stability and dynamic characteristics.关键词
永磁同步电机/无位置传感器/低速性能/两相型锁相环Key words
Permanent magnet synchronous motor (PMSM)/sensorless control/low speed performance/two-phase-type-locked loop (TP-PLL)分类
信息技术与安全科学引用本文复制引用
李孟秋,王龙..一种改进的永磁同步电机低速无位置传感器控制策略[J].电工技术学报,2018,33(9):1967-1974,8.基金项目
湖南省自然科学基金项目资助(S2016J504I). （S2016J504I）
