NDLI: Evaluation of the detectability of broken rotor bars for double squirrel cage rotor induction motors

Content Provider	IEEE Xplore Digital Library
Author	Jongbin Park Byunghwan Kim Jinkyu Yang Sang Bin Lee Wiedenbrug, E.J. Teska, M. Seungoh Han
Copyright Year	2010
Description	Author affiliation: Research Center for Convergence Technology, Hoseo University, Asan, Chungnam, Korea (Seungoh Han) \|\| Baker Instrument Company-An SKF Group Company, Fort Collins, CO, U.S.A. (Wiedenbrug, E.J.; Teska, M.) \|\| Department of Electrical Engineering, Korea University, Seoul, Korea (Jongbin Park; Byunghwan Kim; Jinkyu Yang; Sang Bin Lee)
Abstract	Double squirrel cage rotor design is employed in induction motor applications that require high starting torque and high efficiency operation. The outer cage of double cage rotors is vulnerable to fatigue failure since it must withstand the large thermal/mechanical stresses experienced during a loaded startup due to the high starting current and long acceleration time. However, there are only a few publications that investigate broken bar detection for double cage induction motors. In this paper, the detectability of broken outer cage bars in double cage motors for the most commonly used rotor bar test methods is evaluated. A finite element and experimental study show that the sensitivity of on-line MCSA is significantly decreased, whereas that of off-line standstill tests is not influenced for broken outer cage bars. This suggests that one should be aware of the insensitivity of MCSA for double cage rotors, and there is a need for development of new on-line monitoring methods.
Starting Page	2493
Ending Page	2500
File Size	1841433
Page Count	8
File Format	PDF
ISBN	9781424452866
DOI	10.1109/ECCE.2010.5617950
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Induction motors Torque Condition Monitoring Diagnostics Rotors Broken Rotor Bar Steady-state AC Machine Stators Squirrel-Cage Rotor Off-line Testing Copper Double Cage Induction Motor Spectrum Analysis Bars
Content Type	Text
Resource Type	Article

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