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This paper proposes a technique to determine on-line the stator resistance of a six-phase induction machine in a six-phase drive system. Besides the stator resistance, the stator leakage inductance can be also estimated. These parameters are obtained by solving a least squares minimization problem. The technique is conceived to be used on-line with the drive strategy without disturbing machine electromagnetic torque. Experimental results are used to demonstrate the feasibility of the proposed technique. 746 0-7803-7420-7/02/$17.00 © 2002 IEEE

This paper presents four reduced switch count six-phase AC motor drives. The configurations were conceived to operate without the use of the boost inductor filter. The drive systems provide both bidirectional power flow and power factor control. The paper presents the operating principles and control strategies of the topologies. Experimental and simulation results are presented.

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