Switching Transients in Large Deep-Bar Squirrel Cage Induction Motors

A theoretical basis is established for calculating the transient current and torque developed by an induction machine due to switching operations. The method of calculations is similar to that used for synchronous machines. The validity of the theory has been checked with the experimental results on a model induction motor. Formulae presented in this paper can be further simplified by using empirical factors derived from a number of tests on large machines.