NDLI: Two new approaches to analysis of inner-fault of squirrel-cage rotor for three-phase induction motors

Content Provider	IEEE Xplore Digital Library
Author	Linzheng Zhang Tak Son Cheang
Copyright Year	2001
Description	Author affiliation: Fac. of Sci. & Technol., University of Macau, Macau (Linzheng Zhang)
Abstract	The paper details two new methods for analyzing inner-fault of squirrel-cage rotor for three-phase induction motors. The basic ideas of the first method we have developed in this paper are the "bi-directional revolving magnetic fields" concept and the superposition theorem. According to the procedures of the first method, we calculate the additional stator currents respectively at frequency f/sub 1/ and (1-2s)f/sub 1/, which are caused by breaking one rotor-bar. Then those stator currents are added to the original stator currents in the healthy case so as to form the total fault stator currents during the inner-fault of a squirrel-cage rotor. For the second method, based on the hybrid system of 1,2,0 axes and d,q, 0 axes, we find out the ratio between the amplitude of the stator current at frequency (1-2s)f/sub 1/ and that at frequency f/sub 1/. On the basis of these ideas, the mathematical models of these two new methods have been built. The simulation and experimental results have also been obtained and compared.
Sponsorship	China Electrotech. Soc.(CES)
Starting Page	51
Ending Page	55
File Size	284451
Page Count	5
File Format	PDF
ISBN	7506251159
DOI	10.1109/ICEMS.2001.970607
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-08-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	International Academic Publishers/World Publishing Corporation
Subject Keyword	Rotors Induction motors Stators Frequency Bars Magnetic fields Magnetic analysis Mathematical model Industrial accidents Testing
Content Type	Text
Resource Type	Article

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