Title :
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
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;
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
DOI :
10.1109/IPEMC.2000.884562
