Title

On Innovative Methods of Induction Motor Interturn and Broken-bar Fault Diagnostics

Document Type

Article

Language

eng

Format of Original

10 p.

Publication Date

3-2006

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Source Publication

IEEE Transactions on Industry Applications

Source ISSN

0093-9994

Abstract

A fault indicator, the so-called swing angle, for broken-bar and interturn faults is investigated in this paper. This fault indicator is based on the rotating magnetic-field pendulous-oscillation concept in faulty squirrel-cage induction motors. Using the "swing-angle indicator," it will be demonstrated here that an interturn fault can be detected even in the presence of machine manufacturing imperfections. Meanwhile, a broken-bar fault can be detected under both direct-line and PWM excitations, even under the more difficult condition of partial-load levels. These two conditions of partial load and motor manufacturing imperfections, which are considered as difficult situations for fault detection, are investigated through experimentally obtained test results for a set of 2- and 5-hp induction motors.

Comments

IEEE Transactions on Industry Applications, Vol. 42, No. 2 (March-April 2006): 405-414. DOI.