A method for diagnosis of induction machine fed by PWM vector control

Issue title: Selected Papers from the 13th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2007)

Article type: Research Article

Authors: Kim, Mi-Jung^a | Kim, Byong-Kuk^a | Moon, Ji-Woo^a | Cho, Yun-Hyun^{a; *} | Hwang, Don-Ha^a | Kang, Dong-Sik^b

Affiliations: [a] Department of Electrical Engineering, Dong-A University, 840 Hadan 2 dong, Saha gu, Busan, 604-714, Korea | [b] The Industry Applications Research Laboratory, Korea Electrotechnology Research Institute (KERI), P.O. Box 20, Changwon, Gyeongnam, 641-600, Korea

Correspondence: [*] Corresponding author. Tel.: +82 51 200 6952; Fax: +82 51 200 7743; E-mail: yhcho@dau.ac.kr

Abstract: In this study, we propose a diagnosis method for the rotor eccentricity in induction machines fed by a PWM converter by considering the harmonics in a transient magnetic phenomenon. The influences of the asymmetrical whirling motions are studied using the back EMF of a search coil, which enables the detection of motor faults. The analysis results of the rotor eccentricity could be obtained by comparing the characteristics of motors fabricated with normal and irregular air gaps, and the validity is verified from the experimental results. The simulation and experimental results can be useful for the online faults detection monitoring system of induction machines.

DOI: 10.3233/JAE-2008-985

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 28, no. 1-2, pp. 275-281, 2008