Thorough investigation of the third current harmonic in delta-connected induction motors suffering from a stator inter-turn fault

It has been noted in previous works that, when there is a stator inter-turn fault, the third current harmonic increases in the line current frequency spectrum offering diagnostic potential. This phenomenon has been given many explanations in the past. Many causes have been reported that may produce and influence the third current harmonic, such as saturation, manufacturing imbalances, supply asymmetries, etc. This paper constitutes an effort to analyze and evaluate previous knowledge regarding the third line current harmonic in induction motors suffering from a stator inter-turn fault. The work is carried out with Finite Element Analysis (FEM). In this investigation, FEM is a valuable tool, because it allows the investigation of each parameter's influence on the third current harmonic, independently from the others.

[1]  H.A. Toliyat,et al.  DSP implementation of the multiple reference frames theory for the diagnosis of stator faults in a DTC induction motor drive , 2003, IEEE Transactions on Energy Conversion.

[2]  E.E. Yaz,et al.  A Reconfigurable Motor for Experimental Emulation of Stator Winding Interturn and Broken Bar Faults in Polyphase Induction Machines , 2008, IEEE Transactions on Energy Conversion.

[3]  R. Maier,et al.  Protection of squirrel cage induction motor utilizing instantaneous power and phase information , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[4]  N.Y. Abed,et al.  Modeling and Characterization of Induction Motor Internal Faults Using Finite-Element and Discrete Wavelet Transforms , 2007, IEEE Transactions on Magnetics.

[5]  S. Nandi,et al.  A detailed model of induction machines with saturation extendable for fault analysis , 2004, IEEE Transactions on Industry Applications.

[6]  V. Fernão Pires,et al.  Unsupervised Neural-Network-Based Algorithm for an On-Line Diagnosis of Three-Phase Induction Motor Stator Fault , 2007, IEEE Transactions on Industrial Electronics.

[7]  Hamid A. Toliyat,et al.  Electric Machines: Modeling, Condition Monitoring, and Fault Diagnosis , 2012 .

[8]  T. G. Habetler,et al.  Experimental testing of a neural-network-based turn-fault detection scheme for induction machines under accelerated insulation failure conditions , 2003, 4th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, 2003. SDEMPED 2003..

[9]  Konstantinos N. Gyftakis,et al.  The Zero-Sequence Current as a Generalized Diagnostic Mean in Δ-Connected Three-Phase Induction Motors , 2014, IEEE Transactions on Energy Conversion.

[10]  A. Cardoso,et al.  Diagnosis of stator inter-turn short circuits in DTC induction motor drives , 2004, IEEE Transactions on Industry Applications.

[11]  Richard J. Povinelli,et al.  Induction Machine Broken Bar and Stator Short-Circuit Fault Diagnostics Based on Three-Phase Stator Current Envelopes , 2008, IEEE Transactions on Industrial Electronics.

[12]  Antonio J. Marques Cardoso,et al.  Inter-turn stator winding fault diagnosis in three-phase induction motors, by Park's Vector approach , 1997 .

[13]  António J. Marques Cardoso,et al.  Stator Fault Diagnostics in Squirrel Cage Three-Phase Induction Motor Drives Using the Instantaneous Active and Reactive Power Signature Analyses , 2014, IEEE Transactions on Industrial Informatics.

[14]  Gojko Joksimovic,et al.  The detection of inter-turn short circuits in the stator windings of operating motors , 2000, IEEE Trans. Ind. Electron..

[15]  G. Joksimovic,et al.  The detection of interturn short circuits in the stator windings of operating motors , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).

[16]  S. Williamson,et al.  Analysis of Cage Induction Motors with Stator Winding Faults , 1985, IEEE Power Engineering Review.

[17]  A.J. Marques Cardoso,et al.  Stator winding fault diagnosis in three-phase synchronous and asynchronous motors, by the extended Park's vector approach , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[18]  Thomas G. Habetler,et al.  A survey of condition monitoring and protection methods for medium voltage induction motors , 2009 .

[19]  F. Filippetti,et al.  AI techniques in induction machines diagnosis including the speed ripple effect , 1996 .

[20]  J. S. Hsu,et al.  Monitoring of defects in induction motors through air-gap torque observation , 1995 .

[21]  A.J.M. Cardoso,et al.  Multiple reference frames theory: a new method for the diagnosis of stator faults in three-phase induction motors , 2005, IEEE Transactions on Energy Conversion.

[22]  Humberto Henao,et al.  A frequency-domain detection of stator winding faults in induction machines using an external flux sensor , 2002 .

[23]  Luis Romeral,et al.  Fault Detection in Induction Machines Using Power Spectral Density in Wavelet Decomposition , 2008, IEEE Transactions on Industrial Electronics.

[24]  E.L. Owen,et al.  Assessment of the Reliability of Motors in Utility Applications - Updated , 1986, IEEE Transactions on Energy Conversion.