Reclosing torques of large induction motors with stator trapped flux

Author

Shaltout, A. ; Al-Omoush, M.

Author_Institution

Dept. of Electr. Power & Machines, Cairo Univ., Giza, Egypt

Volume

11

Issue

1

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

84

Lastpage

90

Abstract

Large induction motors are subjected to high transient torques following the rapid reconnection of the supply. The paper shows that these torques have oscillatory components with speed dependent frequencies. These components may result in high torsional torques if the supply is reconnected at an unfavorable instant; when the frequency of one of the torque components coincides with the natural torsional frequency. However, this high torque can be avoided by the proper choice of the reclosing instant

Keywords

circuit breakers; induction motors; magnetic flux; stators; torque; torsion; circuit breaker reclosing; high torsional torques; high transient torques; large induction motors; natural torsional frequency; oscillatory components; reclosing instant; reclosing torques; speed dependent frequencies; stator trapped flux; torque component frequency; Circuit breakers; Frequency; Impedance; Induction motors; Power engineering and energy; Shafts; Stators; Torque; Transient analysis; Voltage;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.486580

Filename

486580