Lamination Design of a Set of Induction Motors for Elevator Systems

In the design of the lamination of an induction motor (IM) for an elevator system, the geometry is not optimized for achieving optimal performance at a given power, but to achieve "adequate" performance for a complete set of power ratings. The proposed approach for this purpose is based on a combined finite element and analytical analysis of the motor. This strategy proves to be rapid and accurate at the same time. Suitable parameters have been chosen to emphasize the dependence on the motor length and the number of turns of the winding. Experimental tests on some IM prototypes confirm the accuracy of the prediction achieved by the proposed analysis.