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Development and Implementation of a Novel Fault Diagnostic and Protection Technique for IPM Motor Drives

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2 Author(s)
Khan, M. ; Fac. of Eng. & Appl. Sci., Memorial Univ. of Newfoundland, St. John''s, NL ; Azizur Rahman, M.

This paper presents the practical implementation of a novel fault diagnostic and protection scheme for the interior permanent-magnet (IPM) synchronous motors using wavelet packet transform (WPT) and artificial neural network. In the proposed technique, the line currents of different faulted and normal conditions of the IPM motor are preprocessed by the WPT. The second level WPT coefficients of line currents are used as inputs of a three-layer feedforward neural network. The proposed protection technique is successfully simulated and experimentally tested on the line-fed and inverter-fed IPM motors. The Texas Instrument 32-bit floating-point digital signal processor TMS320C31 is used for the real-time implementation of the proposed protection algorithm. The offline and online test results of both line-fed and inverter-fed IPM motors are given. These test results showed satisfactory performances of the proposed diagnostic and protection technique in terms of speed, accuracy, and reliability.

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:56 ,  Issue: 1 )

Date of Publication:

Jan. 2009

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