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DSP implementation of the multiple reference frames theory for the diagnosis of stator faults in a DTC induction motor drive

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3 Author(s)
Cruz, S.M.A. ; Dept. of Electr. & Comput. Eng., Univ. of Coimbra, Portugal ; Toliyat, H.A. ; Cardoso, A.J.M.

This paper deals with the use of a new diagnostic technique based on the multiple reference frames theory for the diagnosis of stator winding faults in a direct-torque-controlled (DTC) induction motor drive. The theoretical aspects underlying the use of this diagnostic technique are presented but a major emphasis is given to the integration of the diagnostic system into the digital-signal-processor (DSP) board containing the control algorithm. Taking advantage of the sensors already built in the drive for control purposes, it is possible to implement this diagnostic system at no additional cost, thus giving a surplus value to the drive itself. Experimental results show the effectiveness of the proposed technique to diagnose stator faults and demonstrate the possibility of its integration in the DSP board.

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Energy Conversion, IEEE Transactions on  (Volume:20 ,  Issue: 2 )