Inter-Turn Fault Diagnosis in Induction Motors Using the Pendulous Oscillation Phenomenon

Document Type




Format of Original

12 p.

Publication Date



Institute of Electrical and Electronics Engineers

Source Publication

IEEE Transactions on Energy Conversion

Source ISSN


Original Item ID

doi: 10.1109/TEC.2005.853767


A robust interturn fault diagnostic approach based on the concept of magnetic field pendulous oscillation, which occurs in induction motors under faulty conditions, is introduced in this paper. This approach enables one to distinguish and classify an unbalanced voltage power supply and machine manufacturing/construction imperfections from an interturn fault. The experimental results for the two case studies of a set of 5-hp and 2-hp induction motors verify the validity of the proposed approach. Moreover, it can be concluded from the experimental results that if the circulating current level in the shorted loop increases beyond the phase current level, an interturn fault can be easily detected using the proposed approach even in the presence of the existence of motor manufacturing imperfection effects.


IEEE Transactions on Energy Conversion, Vol. 21, No. 4 (December 2008): 871 - 882. DOI.