Aggregation of induction motors based on their equivalent circuits under some special operating conditions

The paper presents a simple method for aggregating the three-phase single-cage-rotor induction motors connected to a common bus based on their equivalent circuits in power system studies. It is simple to aggregate the motors based on their equivalent circuits in certain operating states. The proposed method has been directly derived from the equivalent circuits of the motors at a same bus when their slips are unity and very small. The paper presents the derivation of the proposed technique and gives its verification