Minimisation of flux droop in direct torque controlled induction motor drives

WSH Wong, DMJ Holliday

Research output: Contribution to journalArticle (Academic Journal)

26 Citations (Scopus)

Abstract

As a result of the uneven voltage vector contribution to the control of stator flux and torque in a direct torque controlled (DTC) induction machine, stator flux magnitude droops at every switching sector transition, particularly when the machine is running at low speed with a heavy load. A simple strategy rotates the conventional DTC switching sectors according to the states of the flux and torque hysteresis comparators and a gating signal. The applied voltage vector thereby maintains stator flux magnitude at the transition between switching sectors and hence improves the phase current without deteriorating the torque response. A thorough simulation analysis of stator flux droop is presented, and both simulation and experimental results confirm the effectiveness of the proposed strategy. © IEE, 2004.
Translated title of the contributionMinimisation of flux droop in direct torque controlled induction motor drives
Original languageEnglish
Article numberIssue 6
Pages (from-to)694 - 703
Number of pages10
JournalIEE Proceedings: Electric Power Applications
Volume151 (6)
DOIs
Publication statusPublished - 7 Nov 2004

Bibliographical note

Publisher: Institution of Electrical Engineers (IEE)

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