Title :
Study on Extend Kalman Filter at Low Speed in Sensorless PMSM Drives
Author :
Shan-Mao Gu ; Feng-You He ; Hui Zhang
Author_Institution :
Dept. of Electr. Eng., China Univ. of Min. & Technol. Xuzhou, Xuzhou
Abstract :
The application of an extended Kalman filter (EKF) as nonlinear speed and position observer in PMSM drives has been a mature research project. However, one significant problem still unsolved is the weakly performance at low speed of PMSM drive system that yield to the best estimation performance on high speed range (>5 Hz). This paper proposes a novel method--adjustable DC bus voltage, for low speed EKF sensorless control of permanent magnet synchronous motor (PMSM) drives. The findings from the experiment that the better performance at low speed (>2 Hz) by adjusting the DC Bus voltage according to the system reference speed are also presented. Simulation and experimental results are given to confirm the effectiveness of the proposed method.
Keywords :
Kalman filters; machine vector control; permanent magnet motors; synchronous motor drives; adjustable DC bus voltage; extend Kalman filter; nonlinear speed; permanent magnet synchronous machine drives; position observer; sensorless PMSM drives; sensorless control; Low voltage; Permanent magnet motors; Sensorless control; Yield estimation; DC bus voltage; Extended Kalman Filter; PMSM; Performance at low speed; Sensorless control;
Conference_Titel :
Electronic Computer Technology, 2009 International Conference on
Conference_Location :
Macau
Print_ISBN :
978-0-7695-3559-3
DOI :
10.1109/ICECT.2009.17
