Title :
A Novel Micro Permanent Magnet Synchronous Motor Drive System without using a Rotor Position
Author :
Chang, Yih-Hua ; Liu, Tian-Hua ; Wu, Chia-Chin
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei
Abstract :
This paper proposes a novel shaft position/speed estimating technique for a micro permanent magnet synchronous motor. By using the special characteristics of the micro motor, the back emf of the motor can be easily detected. In addition, the shaft position/speed can be derived according to the back emf. After obtaining the rotor position and speed, a closed-loop drive system can be achieved. A TMS-320-LF2407A DSP is used to estimate the shaft position/speed. In addition, a current controlled circuit, PWM circuit, and an inverter are implemented to control the stator current, and then control the motor. As a result, a closed-loop system is thus achieved. Experimental results validate the theoretical analysis
Keywords :
PWM invertors; closed loop systems; digital control; digital signal processing chips; electric current control; machine control; micromotors; permanent magnet motors; synchronous motor drives; PWM circuit; TMS-320-LF2407A DSP; back emf; closed-loop drive system; current controlled circuit; inverter; micropermanent magnet synchronous motor drive system; motor control; shaft position estimating technique; shaft speed estimating technique; stator current control; Circuits; Magnetic sensors; Manufacturing processes; Micromotors; Permanent magnet motors; Rotors; Shafts; Stators; Synchronous motors; Torque; Micro permanent magnet synchronous motor; digital signal processor; shaft position/speed;
Conference_Titel :
Industrial Electronics and Applications, 2006 1ST IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
0-7803-9513-1
Electronic_ISBN :
0-7803-9514-X
DOI :
10.1109/ICIEA.2006.257126
