Title :
A variable-voltage direct torque control based on DSP in PM synchronous motor drive
Author :
Lianbing, Li ; Xiaojun, Wang ; Hexu, Sun
Author_Institution :
Dept. of Electr. Eng., Nankai Univ. of Technol., Tianjin, China
Abstract :
In this paper, a kind of variable-voltage direct torque control (DTC) method for permanent magnet synchronous motor (PMSM) drive system is proposed. 24 or more voltage vectors with variable voltage on circle traces are obtained. A new switch table is used to select voltage vectors effectively. By theory analysis and simulation research, the proposed control method is proved to enable diminishing the torque ripple, especially in low speed range. In the preliminary experiment, both smooth control of speed and high dynamic performance are achieved.
Keywords :
digital control; digital signal processing chips; machine control; permanent magnet motors; synchronous motor drives; torque control; DSP; PM synchronous motor drive; PMSM drive; circle traces; flux linkage control; high dynamic performance; permanent magnet synchronous motor drive; switch table; theory analysis; torque ripple reduction; variable-voltage direct torque control; voltage vectors selection; voltage vectors subdivision; Couplings; Digital signal processing; Equations; Rotors; Stators; Sun; Switches; Synchronous motors; Torque control; Voltage control;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1182749
