DocumentCode :
1449631
Title :
Fault-Tolerant Control of Five-Phase Permanent-Magnet Motors With Trapezoidal Back EMF
Author :
Dwari, Suman ; Parsa, Leila
Author_Institution :
United Technol. Res. Center, East Hartford, CT, USA
Volume :
58
Issue :
2
fYear :
2011
Firstpage :
476
Lastpage :
485
Abstract :
This paper presents fault-tolerant control techniques for five-phase permanent-magnet motors with trapezoidal back electromotive forces under various open-circuit conditions. The proposed fault-tolerant control methods use only the fundamental and third-harmonic current components for the excitation of the healthy stator phases. The control techniques are developed by applying a concept that correlates the currents in the healthy phases based on their symmetry in space with respect to the fault in a machine. Optimum solutions under the single-phase open-circuit fault condition and double-phase open-circuit fault conditions are presented. The presented solutions are derived to increase the average output torque while reducing the torque pulsations and satisfying the zero-neutral-current constraint. Detailed experimental results are presented for the verification of the proposed solutions.
Keywords :
fault tolerance; harmonic analysis; machine control; permanent magnet motors; double-phase open-circuit fault conditions; fault-tolerant control techniques; five-phase permanent-magnet motors; harmonic current components; single-phase open-circuit fault condition; trapezoidal back EMF; trapezoidal back electromotive forces; zero-neutral-current constraint; Fault tolerance; multiphase machines; open circuit fault; permanent-magnet machines;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2010.2045322
Filename :
5437351
Link To Document :
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