An Analytical Method for Calculating Critical Voltage Sag Clearance Time of Induction Motors

This letter presents an analytical method to determine the maximum symmetrical voltage sag ridethrough time for induction motors. The proposed method is based on the observation that in order to make a motor viable after voltage sag, the motor's electromagnetic torque should be greater than the...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2012-10, Vol.27 (4), p.2412-2414
Main Authors: Zhijun Wang, Xiaoyu Wang, Chung, C. Y.
Format: Article
Language:English
Subjects:
A.c. Machines
Applied sciences
Critical clearance time
Disturbances. Regulation. Protection
Electric potential
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Electromagnetic compatibility
Equivalent circuits
Exact sciences and technology
Induction motors
Information, signal and communications theory
Mathematical analysis
Miscellaneous
Motors
Power networks and lines
Power quality
Power system stability
ridethrough capability
Rotors
Sag
Telecommunications and information theory
Terminals
Torque
Voltage
Voltage fluctuations
voltage sags
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Description
Summary:This letter presents an analytical method to determine the maximum symmetrical voltage sag ridethrough time for induction motors. The proposed method is based on the observation that in order to make a motor viable after voltage sag, the motor's electromagnetic torque should be greater than the mechanical torque when the motor terminal voltage is recovered.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2012.2202204