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http://dx.doi.org/10.5370/JEET.2014.9.5.1623

Inductances Evaluation of a Squirrel-Cage Induction Motor with Curved Dynamic Eccentricity  

Lv, Qiang (School of Electrical Engineering and Automation, Hefei University of Technology)
Bao, Xiaohua (School of Electrical Engineering and Automation, Hefei University of Technology)
He, Yigang (School of Electrical Engineering and Automation, Hefei University of Technology)
Fang, Yong (School of Electrical Engineering and Automation, Hefei University of Technology)
Cheng, Xiaowei (School of Electrical Engineering and Automation, Hefei University of Technology)
Publication Information
Journal of Electrical Engineering and Technology / v.9, no.5, 2014 , pp. 1623-1631 More about this Journal
Abstract
Eccentricity faults more or less exist in all rotating electrical machines. This paper establishes a more precise model of dynamic eccentricity (DE) in electrical machines named as curved dynamic eccentricity. It is a kind of axial unequal eccentricity which has not been investigated in detail so far but occurs in large electrical machines. The inductances of a large three-phase squirrel-cage induction machine (SCIM) under different levels of curved DE conditions are evaluated using winding function approach (WFA). These inductances include the stator self and mutual inductances, rotor self and mutual inductances, and mutual inductances between stator phases and rotor loops. A comparison is made between the calculation results under curved DE and the corresponding pure DE conditions. It indicates that the eccentricity condition will be more terrible than the monitored eccentricity based on the conventional pure DE model.
Keywords
Curved dynamic eccentricity; Inductance evaluation; Induction machine; Winding function approach;
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Times Cited By KSCI : 1  (Citation Analysis)
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