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

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1452

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954324

Filename

954324