Sensorless brushless DC motor drive with EMF constant identifier

Author

Takeshita, Takaharu ; Matsui, Nobuyuki

Author_Institution

Dept. of Electr. & Comput. Eng., Nagoya Univ., Japan

Volume

1

fYear

1994

fDate

5-9 Sep 1994

Firstpage

14

Abstract

This paper presents the position and speed sensorless drive of a brushless DC motor with a sinusoidal flux distribution. Since the motor with a ferrite magnet rotor presents the EMF constant variation due to a temperature rise, sensorless drive characteristics must be robust against variations of EMF constant. The features of the proposed scheme are the simultaneous identifications of position, speed and EMF constant. The estimation is based on the current difference between the actual motor and the model. By using this current difference, estimations of speed and EMF constant are performed and the position is obtained as an integration of the estimated speed. The effectiveness of the proposed scheme is confirmed by experiments using 1.2 kW brushless DC motors

Keywords

brushless DC motors; control system analysis; control system synthesis; machine control; machine testing; machine theory; motor drives; parameter estimation; position control; robust control; rotors; velocity control; 1.2 kW; EMF constant identifier; brushless DC motor drive; ferrite magnet rotor; parameter estimation; position control; robust; sensorless control; speed regulation; temperature rise; Brushless DC motors; Brushless motors; DC motors; Drives; Ferrites; Magnetic flux; Robustness; Rotors; Sensorless control; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on

Conference_Location

Bologna

Print_ISBN

0-7803-1328-3

Type

conf

DOI

10.1109/IECON.1994.397742

Filename

397742