A sensorless direct speed control for brushless DC motor drives

Author

Noroozi, Mohammad Ali ; Moghani, Javad Shokrollahi ; Dehnavi, A.

Author_Institution

Electr. Eng. Dept., Amirkabir Univ. of Technol., Tehran, Iran

fYear

2013

fDate

13-14 Feb. 2013

Firstpage

26

Lastpage

30

Abstract

This paper presents the groundwork for a novel concept of sensorless direct speed control (SDSC) in brushless DC (BLDC) motor drives. Unlike the conventional sensorless speed controls, the proposed strategy does not need proportional plus integral (PI) regulators. Thus feedback mechanism is minimized. Speed regulation is achieved by controlling rotational speed of stator flux linkage. The PI regulator is replaced with a simple comparator. The BLDC motor is excited based on a look-up table. This proposal is applicable to both two-phase and three-phase conduction modes of the BLDC motors. In this paper, principles of the proposed sensorless strategy and speed ripple calculation are described in details. The validity of this claim is verified through the simulation results.

Keywords

DC motor drives; PI control; angular velocity control; brushless DC motors; feedback; sensorless machine control; table lookup; BLDC motor drives; PI regulators; SDSC; brushless DC motor drives; feedback mechanism; look-up table; proportional plus integral regulators; rotational speed control; sensorless direct speed control strategy; speed regulation; speed ripple calculation; three-phase conduction modes; two-phase conduction modes; Couplings; Estimation; Reliability theory; Switches; Brushless DC motor; Direct speed control; PI controller; Sensoless speed drive;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Drive Systems and Technologies Conference (PEDSTC), 2013 4th

Conference_Location

Tehran

Print_ISBN

978-1-4673-4481-4

Electronic_ISBN

978-1-4673-4483-8

Type

conf

DOI

10.1109/PEDSTC.2013.6506667

Filename

6506667