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

fYear

2009

fDate

20-22 Feb. 2009

Firstpage

311

Lastpage

316

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Computer Technology, 2009 International Conference on

Conference_Location

Macau

Print_ISBN

978-0-7695-3559-3

Type

conf

DOI

10.1109/ICECT.2009.17

Filename

4795973