Direct Torque Control of Three-Phase PM Brushless AC Motor with One Phase Open-Circuit Fault

Z. Q. Zhu, K. Utaikaifa, K. Hoang, Y. Liu, D. Howe

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

30 Citations (Scopus)

Abstract

In this paper, direct torque control (DTC) of a threephase permanent magnet (PM) brushless AC (BLAC) motor having one phase open-circuit fault is described. An extra inverter leg is employed to provide the current path during the fault operation. The new flux estimation algorithm for the faulty motor is presented. The simulation results show that the proposed DTC yields satisfactory torque and flux control. The performance of the developed system is verified by experiments on a prototype system. In addition, the influence of low pass filter, sampling time delay, as well as the unbalanced phase back-emf waveforms is investigated, while the difference in DTC performance between healthy and faulty systems is also discussed and corresponding simulated and measured results presented.

Original languageEnglish
Title of host publication2009 IEEE International Electric Machines and Drives Conference, IEMDC '09
PublisherIEEE Computer Society
Pages1180-1187
Number of pages8
ISBN (Electronic)9781424442522
ISBN (Print)9781424442515
DOIs
Publication statusPublished - 16 Jun 2009
Externally publishedYes
Event2009 IEEE International Electric Machines and Drives Conference - Miami, United States
Duration: 3 May 20096 May 2009

Conference

Conference2009 IEEE International Electric Machines and Drives Conference
Abbreviated titleIEMDC '09
CountryUnited States
CityMiami
Period3/05/096/05/09

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