EVALUATION OF THE TRANSIENT PERFORMANCE OF CASCADE INDUCTION-MOTORS

This paper demonstrates an effective method to predict the transient p erformance of common-shaft cascade induction motors. This system is co mmonly used in deep well digging plant (i.e. oil wells). The transient events presented in this paper are obtained by using a PC based simul ation program. These events include system starting, system loading an d unloading, three-phase fault occurrence and clearance, disconnection and reconnection of the supply, and plugging.