Sensorless drive of brushless DC motor with 180-degree commutation

Author

Hu, Boyang ; Sathiakumar, Swamidoss ; Shrivastava, Yash

Author_Institution

Sch. of Electr. & Inf. Eng., Univ. of Sydney, Sydney, NSW, Australia

Volume

2

fYear

2009

fDate

8-9 Aug. 2009

Firstpage

579

Lastpage

582

Abstract

To drive trapezoidal back-EMF type of brushless DC motor, for 120-degree commutation, the winding without phase current in each conduction interval can be considered as a sensor for back-EMF detection. However, in the case of 180-degree commutation, the back-EMF detection can not be realized because all the three windings are driven with current. Sensorless algorithm of indirect back-EMF determination is necessary to be used. In this paper, 180-degree commutation gate switching pattern is analysed. An enhanced sensorless algorithm is developed for 180-degree commutation. PWM soft chopping technique is carried out for supplied voltage adjustment. The simulation results based on Matlab/Simulink prove that the proposed sensorless drive of 180-degree commutation works properly.

Keywords

DC motor drives; brushless DC motors; choppers (circuits); commutation; PWM soft chopping technique; back-EMF detection; brushless DC motor sensorless drive; commutation gate switching pattern; Australia; Brushless DC motors; Communication system control; Commutation; Engineering management; Pattern analysis; Phase detection; Pulse width modulation; Sensorless control; Torque; 180-degree commutation; BLDC motor; sensorless;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing, Communication, Control, and Management, 2009. CCCM 2009. ISECS International Colloquium on

Conference_Location

Sanya

Print_ISBN

978-1-4244-4247-8

Type

conf

DOI

10.1109/CCCM.2009.5267812

Filename

5267812