Simplified EKF Based Sensorless Direct Torque Control of Permanent Magnet Brushless AC Drives  

作　　者：David Howe 

机构地区：[1]Department of Electronic and Electrical Engineering University of Sheffield, Mappin Street, Sheffield S1 3JD, UK

出　　处：《International Journal of Automation and computing》2004年第1期35-41,共7页国际自动化与计算杂志（英文版）

摘　　要：A simplified extended Kalman filter (EKF) based sensorless direct torque control technique for a permanent magnet brushless AC drive is proposed. Its performance is compared with that obtained with other sensorless methods for estimating the rotor speed and position from a stator flux-linkage. Since the EKF has an inherently adaptive filtering capability and does not introduce phase delay, the technique provides better speed estimates. In addition, the technique is easy to implement and requires minimal computation.A simplified extended Kalman filter (EKF) based sensorless direct torque control technique for a permanent magnet brushless AC drive is proposed. Its performance is compared with that obtained with other sensorless methods for estimating the rotor speed and position from a stator flux-linkage. Since the EKF has an inherently adaptive filtering capability and does not introduce phase delay, the technique provides better speed estimates. In addition, the technique is easy to implement and requires minimal computation.

关 键 词：Brushless motor direct torque control (DTC) extended Kalman filter (EKF) permanent magnet SENSORLESS 

分 类 号：TN713[电子电信—电路与系统]