A hybrid speed and current controller based on ML4425 for brushless DC motor without position sensor

Author

Wang, Baoguo ; Wang, Fengxiang ; Lin, Chengwu

Author_Institution

Sch. of Electr. Eng., Shenyang Univ. of Technol., China

Volume

2

fYear

2000

fDate

2000

Firstpage

612

Abstract

This paper proposes a scheme of a hybrid sensorless speed and current controller based on ML4425 for brushless DC motors (BLDCM). The ML4425 provides functions necessary for starting and controlling the speed of BLDCM without position sensors of rotors; however it does not contain the function of current feedback to guarantee dynamic performance. The current feedback loop can be easily added using the proposed approach. The experimental results have substantiated the feasibility of the hybrid controller

Keywords

angular velocity control; brushless DC motors; electric current control; feedback; machine control; parameter estimation; starting; brushless DC motor; current controller; current feedback loop; hybrid speed/current controller; rotor position estimation; sensorless controller; speed controller; starting; Commutation; Frequency; Logic; Phase detection; Phase estimation; Phase locked loops; Rotors; Velocity control; Voltage control; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International

Conference_Location

Beijing

Print_ISBN

7-80003-464-X

Type

conf

DOI

10.1109/IPEMC.2000.884562

Filename

884562