Title :
An Analytical Method for Calculating Critical Voltage Sag Clearance Time of Induction Motors
Author :
Wang, Zhijun ; Wang, Xiaoyu ; Chung, C.Y.
Author_Institution :
Sch. of Electr. Eng., Shandong Univ., Jinan, China
Abstract :
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.
Keywords :
induction motors; power supply quality; critical voltage sag clearance time calculation; induction motors; maximum symmetrical voltage sag ride through time; motor electromagnetic torque; motor terminal voltage; Equivalent circuits; Induction motors; Power quality; Power system stability; Rotors; Torque; Voltage fluctuations; Critical clearance time; induction motors; ridethrough capability; voltage sags;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2012.2202204
