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An induction motor drive system with improved fault tolerance

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4 Author(s)
M. Beltrao de Rossiter Correa ; Dept. de Engenharia Eletrica, Univ. Federal da Paraiba, Joao Pessoa, Brazil ; C. Brandao Jacobina ; E. R. Cabral da Silva ; A. M. Nogueira Lima

This paper investigates the utilization of a simplified topology that permits the fault-tolerant operation of a three-phase induction motor drive system. When one of the inverter legs is lost, the machine can operate with only two stator windings by connecting the machine neutral to a fourth converter leg. The structure and the operation principle of the system are presented. The machine model corresponding to the asymmetric two-windings machine is developed and a suitable controller is proposed. Experimental results are presented

Published in:

IEEE Transactions on Industry Applications  (Volume:37 ,  Issue: 3 )