Investigation of induction machine phase open circuit faults using a simplified equivalent circuit model

An induction motor model based on the per-phase equivalent circuit is used to simulate operation with an open circuit fault. The model considers both spatial field harmonics as well as saturation effects to correctly model the motor's behaviour under faulty conditions, where the non-linearities may produce problematic torque pulsations due to the unbalanced nature of the winding distribution. A model is presented which takes into account the most prominent nonlinearities, however keeping simulation times low in order to enable the development of fault tolerant control strategies. In addition, this paper presents a study of the behaviour of an induction motor drive with a phase open circuit fault. A new fault remedial control strategy for this type of fault will also be described. Experimental tests on an instrumented vector controlled rig have been used to verify simulation results.

[1]  P. C. Sen,et al.  Principles of Electric Machines and Power Electronics , 1989 .

[2]  P. L. Alger,et al.  Induction machines, their behavior and uses , 1995 .

[3]  André M. S. Mendes,et al.  Fault-Tolerant Operating Strategies Applied to Three-Phase Induction-Motor Drives , 2006, IEEE Transactions on Industrial Electronics.

[4]  A.M.N. Lima,et al.  An induction motor drive system with improved fault tolerance , 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).

[5]  C. Gerada,et al.  The implications of winding faults in induction motor drives , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[6]  N. Bianchi,et al.  Innovative Remedial Strategies for Inverter Faults in IPM Synchronous Motor Drives , 2002, IEEE Power Engineering Review.

[7]  Silverio Bolognani,et al.  Experimental fault-tolerant control of a PMSM drive , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).

[8]  T.A. Lipo,et al.  A strategy for improving reliability of field oriented controlled induction motor drives , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[9]  C. Gerada,et al.  A simplified model for induction machines with faults to aid the development of fault tolerant drives , 2008, 2008 13th International Power Electronics and Motion Control Conference.

[10]  B. Heller,et al.  Harmonic field effects in induction machines , 1977 .

[11]  B. Dagues,et al.  An accurate model of squirrel cage induction machines under rotor faults , 2001, ICEMS'2001. Proceedings of the Fifth International Conference on Electrical Machines and Systems (IEEE Cat. No.01EX501).