A Novel Approach for Broken Bar Fault Diagnosis in Induction Motors Through Torque Monitoring

The cracked or broken bar fault constitutes about 5-10% of total induction motor failures and leads to malfunction as well as reduction of the motor's life cycle. This is the reason why there is continuous research on techniques for prompt detection. In this study, a study of the influences of the broken bar fault to the electromagnetic characteristics of the induction motor is presented, using an asynchronous cage motor and finite element method analysis. To this direction, two models have been created and studied: a healthy and one with a broken bar. Additionally, a new approach on the detection of the broken rotor bar fault through the electromagnetic torque monitoring is suggested and validated through experimental results.

[1]  F. Filippetti,et al.  Quantitative evaluation of induction motor broken bars by means of electrical signature analysis , 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).

[2]  Joseph C. S. Lai,et al.  Noise of Polyphase Electric Motors , 2005 .

[3]  Alberto Bellini,et al.  Quantitative Evaluation of Induction Motor Broken Bars By Means of Electric Signals Signatures , 2001 .

[4]  J. Sprooten,et al.  Influence of Saturation Level on the Effect of Broken Bars in Induction Motors Using Fundamental Electromagnetic Laws and Finite Element Simulations , 2009, IEEE Transactions on Energy Conversion.

[5]  Ion Boldea,et al.  The Induction Machines Design Handbook , 2009 .

[6]  H.A. Toliyat,et al.  A novel approach for broken rotor bar detection in cage induction motors , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[7]  S. Ahmed,et al.  Detection of Rotor Slot and Other Eccentricity-Related Harmonics in a Three-Phase Induction Motor with Different Rotor Cages , 2001, IEEE Power Engineering Review.

[8]  Xie Ying.  Characteristic Performance Analysis of Squirrel Cage Induction Motor With Broken Bars , 2009 .

[9]  Zhe Zhang,et al.  Online rotor mixed fault diagnosis way based on spectrum analysis of instantaneous power in squirrel cage induction motors , 2004 .

[10]  H.A. Toliyat,et al.  Condition Monitoring and Fault Diagnosis of Electrical Motors—A Review , 2005, IEEE Transactions on Energy Conversion.

[11]  K. Vasudevan,et al.  Online Cage Rotor Fault Detection Using Air-Gap Torque Spectra , 2002, IEEE Power Engineering Review.

[12]  David G. Dorrell,et al.  Analysis of axial voltages and inter-bar currents in cast copper cage rotors during DC current injection as an aid to identify casting faults , 2009, 2009 35th Annual Conference of IEEE Industrial Electronics.

[13]  Javier A. Rosero,et al.  New Fault Detection Techniques For Induction Motors , 2006 .

[14]  C. F. Landy,et al.  Assessment of interbar currents in double-cage induction motors with broken bars , 1994 .

[15]  Andrzej M. Trzynadlowski,et al.  Comparative investigation of diagnostic media for induction motors: a case of rotor cage faults , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

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

[17]  Gérard-André Capolino,et al.  Advances in Diagnostic Techniques for Induction Machines , 2008, IEEE Transactions on Industrial Electronics.

[18]  Mario Eltabach,et al.  A comparison of external and internal methods of signal spectral analysis for broken rotor bars detection in induction motors , 2004, IEEE Transactions on Industrial Electronics.

[19]  J. A. Tegopoulos,et al.  Analysis of Squirrel Cage Induction , 1999 .

[20]  C. F. Landy,et al.  Determination of interbar current effects in the detection of broken rotor bars in squirrel cage induction motors , 1994 .

[21]  Humberto Henao,et al.  Analytical approach of the stator current frequency harmonics computation for detection of induction machine rotor faults , 2003, 4th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, 2003. SDEMPED 2003..

[22]  Heinrich Frohne.  Über die primären Bestimmungsgrößen der Lautstärke bei Asynchronmaschinen , 1959 .

[23]  C. F. Landy,et al.  The Existence of Large Inter-Bar Currents in Three Phase Squirrel Cage Motors with Rotor-Bar And/Or End-Ring Faults , 1984 .

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

[25]  Mario Eltabach,et al.  Detection of broken rotor bar of induction motors by spectral analysis of the electromagnetic torque using the Luenberger observer , 2001, IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243).

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

[27]  I. Kerszenbaum,et al.  The Existence of Large Inter-Bar Currents in Three Phase Squirrel Cage Motors with Rotor-Bar And/Or End-Ring Faults , 1984, IEEE Transactions on Power Apparatus and Systems.

[28]  Jinkyu Yang,et al.  Evaluation of the detectability of broken rotor bars for double squirrel cage rotor induction motors , 2010, 2010 IEEE Energy Conversion Congress and Exposition.