New direct torque control scheme for induction motors

X. Del Toro*, M. G. Jayne, P. A. Witting, J. Pou, A. Arias, J. L. Romeral

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper a novel controller based on Direct Torque Control is presented. This controller has been designed to be applied in the control of induction motors fed with a three-level Voltage Source Inverter (VSI). This type of inverter has several advantages over the standard two-level VSI, such as a greater number of levels in the output voltage waveforms, less harmonic distortion and lower switching frequencies. In the new controller the hysteresis regulators and look-up table are not used, and instead, the torque and stator flux errors are used together with the motor speed to generate a reference voltage vector that can be synthesized using different techniques afterwards. Experimental results of the novel system are presented and compared with those obtained for Classical DTC system when employing two-level VSI. The new controller is shown to reduce the ripple in the torque and flux responses. Lower current distortion and switching frequency of the semiconductor devices are also obtained in the new system presented.

Original languageEnglish
Title of host publication2005 European Conference on Power Electronics and Applications
PublisherIEEE Computer Society
ISBN (Print)9075815085, 9789075815085
DOIs
Publication statusPublished - 2005
Externally publishedYes
Event2005 European Conference on Power Electronics and Applications - Dresden, Germany
Duration: Sept 11 2005Sept 14 2005

Publication series

Name2005 European Conference on Power Electronics and Applications
Volume2005

Conference

Conference2005 European Conference on Power Electronics and Applications
Country/TerritoryGermany
CityDresden
Period9/11/059/14/05

ASJC Scopus Subject Areas

  • General Engineering

Keywords

  • Adjustable speed drive
  • Direct torque and flux control
  • Induction motor
  • Multilevel converters

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