Transient Torques in 3-Phase Induction Motors during Switching Operations

Abstract
Transient torques developed in 3-phase induction motors, during switching operations, i.e., during starting, during reconnection to the line, and during plugging are studied. A mathematical analysis for torque is given for each case. The expressions are obtained in the normalized form and are studied for various numerical values of the parameters of the machine. An experimental verification is given for the case of starting. Based on theoretical and experimental studies conclusions are drawn.

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