TY - GEN
T1 - Evaluation of the detectability of broken rotor bars for double squirrel cage rotor induction motors
AU - Park, Jongbin
AU - Kim, Byunghwan
AU - Yang, Jinkyu
AU - Lee, Sang Bin
AU - Wiedenbrug, Ernesto J.
AU - Teska, Mike
AU - Han, Seungoh
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - AC machine
KW - Broken rotor bar
KW - Condition monitoring
KW - Diagnostics
KW - Double cage induction motor
KW - Off-line testing
KW - Spectrum analysis
KW - Squirrel-cage rotor
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U2 - 10.1109/ECCE.2010.5617950
DO - 10.1109/ECCE.2010.5617950
M3 - Conference contribution
AN - SCOPUS:78650115234
SN - 9781424452866
T3 - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
SP - 2493
EP - 2500
BT - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
T2 - 2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
Y2 - 12 September 2010 through 16 September 2010
ER -
