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An induction motor drive system with improved fault tolerance

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

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:

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