Title :
An improved multilevel DTC drive
Author :
Damiano, A. ; Gatto, G. ; Marongiu, I. ; Perfetto, A.
Author_Institution :
Dipt. di Ingegneria Elettrica ed Elettronica, Universita degli Studi di Cagliari, Italy
fDate :
6/23/1905 12:00:00 AM
Abstract :
An improved control algorithm for a multilevel DTC drive is proposed in the present paper. It allows avoidance of the demagnetisation phenomena at zero speed and reduction of the torque ripple without increasing the switching frequency. In particular, the reference torque time derivative is used with the aim of optimising the NPC converter voltage selection criteria, during torque and load variations. Results of extensive simulations are presented and discussed to prove the effectiveness of the proposed multilevel DTC drive
Keywords :
induction motor drives; machine control; power convertors; torque control; variable speed drives; NPC converter; control algorithm; direct torque control; induction motor variable-speed drive; load variations; multilevel DTC drive; switching frequency increase; torque ripple reduction; torque time derivative; torque variations; Electric variables control; Electromagnetic analysis; Equations; Induction motors; Inverters; Load management; Stators; Switching frequency; Torque control; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954324
