Lamination Design of a Set of Induction Motors

Abstract: In several applications, the geometry of induction motor (IM) lamination is not optimized for achieving optimal performance of a given power rating, but to achieve “adequate” performance for various power ratings. This is, for example, to limit the cost of the lamination stamp or to adopt commercial lamination. In this paper a suitable procedure proper for this cases is used to design a set of IMs. The procedure considers a normalized motor, independent of the motor length and number of winding turns. It is based on a combined finite element and analytical analysis of the motor yielding a rapid and accurate performance prediction at the same time. In the paper, experimental tests on some IM prototypes confirm the accuracy of the predictions achieved by the proposed analysis.